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Finding the Fourth Proportional to 6,242.78, 8,614.41 and 3,724.40

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Solution

The fourth proportional to 6,242.78, 8,614.41 and 3,724.40 is: 5,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242.78 : 8,614.41 = 3,724.40 : x
  2. Step 2: Convert to fraction form
    6,242.78/8,614.41 = 3,724.40/x
  3. Step 3: Cross multiply
    6,242.78x = 8,614.41 × 3,724.40
  4. Step 4: Simplify right side
    6,242.78x = 32,083,508.60
  5. Step 5: Solve for x
    x = 32,083,508.60/6,242.78
  6. Step 6: Final answer
    x = 5,139.30

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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.