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Finding the Fourth Proportional to 5,118.99, 7,641.11 and 4,393.23

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Solution

The fourth proportional to 5,118.99, 7,641.11 and 4,393.23 is: 6,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.99 : 7,641.11 = 4,393.23 : x
  2. Step 2: Convert to fraction form
    5,118.99/7,641.11 = 4,393.23/x
  3. Step 3: Cross multiply
    5,118.99x = 7,641.11 × 4,393.23
  4. Step 4: Simplify right side
    5,118.99x = 33,569,153.69
  5. Step 5: Solve for x
    x = 33,569,153.69/5,118.99
  6. Step 6: Final answer
    x = 6,557.77

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Find fourth proportional to 2,559.50, 3,820.56 and 2,196.62
Half scale
Find fourth proportional to 10,237.98, 15,282.22 and 8,786.46
Double scale
Find fourth proportional to 5,119.99, 7,642.60 and 4,394.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.