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Finding the Fourth Proportional to 3,452.09, 5,178.22 and 986.99

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Solution

The fourth proportional to 3,452.09, 5,178.22 and 986.99 is: 1,480.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,452.09 : 5,178.22 = 986.99 : x
  2. Step 2: Convert to fraction form
    3,452.09/5,178.22 = 986.99/x
  3. Step 3: Cross multiply
    3,452.09x = 5,178.22 × 986.99
  4. Step 4: Simplify right side
    3,452.09x = 5,110,823.00
  5. Step 5: Solve for x
    x = 5,110,823.00/3,452.09
  6. Step 6: Final answer
    x = 1,480.50

Related Problems

Find fourth proportional to 1,726.04, 2,589.11 and 493.49
Half scale
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Double scale
Find fourth proportional to 3,453.09, 5,179.72 and 987.99
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.