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Finding the Fourth Proportional to 4,432, 6,647.28 and 3,129.52

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Solution

The fourth proportional to 4,432, 6,647.28 and 3,129.52 is: 4,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,432 : 6,647.28 = 3,129.52 : x
  2. Step 2: Convert to fraction form
    4,432/6,647.28 = 3,129.52/x
  3. Step 3: Cross multiply
    4,432x = 6,647.28 × 3,129.52
  4. Step 4: Simplify right side
    4,432x = 20,802,795.71
  5. Step 5: Solve for x
    x = 20,802,795.71/4,432
  6. Step 6: Final answer
    x = 4,693.77

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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.