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Finding the Fourth Proportional to 9,862.64, 13,610.72 and 5,614.28

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Solution

The fourth proportional to 9,862.64, 13,610.72 and 5,614.28 is: 7,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,862.64 : 13,610.72 = 5,614.28 : x
  2. Step 2: Convert to fraction form
    9,862.64/13,610.72 = 5,614.28/x
  3. Step 3: Cross multiply
    9,862.64x = 13,610.72 × 5,614.28
  4. Step 4: Simplify right side
    9,862.64x = 76,414,393.08
  5. Step 5: Solve for x
    x = 76,414,393.08/9,862.64
  6. Step 6: Final answer
    x = 7,747.86

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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.