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Finding the Fourth Proportional to 5,681.28, 8,513.28 and 3,371.52

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Solution

The fourth proportional to 5,681.28, 8,513.28 and 3,371.52 is: 5,052.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.28 : 8,513.28 = 3,371.52 : x
  2. Step 2: Convert to fraction form
    5,681.28/8,513.28 = 3,371.52/x
  3. Step 3: Cross multiply
    5,681.28x = 8,513.28 × 3,371.52
  4. Step 4: Simplify right side
    5,681.28x = 28,702,693.79
  5. Step 5: Solve for x
    x = 28,702,693.79/5,681.28
  6. Step 6: Final answer
    x = 5,052.15

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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.