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Finding the Fourth Proportional to 5,641.11, 7,784.82 and 3,123.23

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Solution

The fourth proportional to 5,641.11, 7,784.82 and 3,123.23 is: 4,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.11 : 7,784.82 = 3,123.23 : x
  2. Step 2: Convert to fraction form
    5,641.11/7,784.82 = 3,123.23/x
  3. Step 3: Cross multiply
    5,641.11x = 7,784.82 × 3,123.23
  4. Step 4: Simplify right side
    5,641.11x = 24,313,744.44
  5. Step 5: Solve for x
    x = 24,313,744.44/5,641.11
  6. Step 6: Final answer
    x = 4,310.10

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Double scale
Find fourth proportional to 5,642.11, 7,786.20 and 3,124.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.