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Finding the Fourth Proportional to 4,472.78, 6,710.49 and 1,352.88

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Solution

The fourth proportional to 4,472.78, 6,710.49 and 1,352.88 is: 2,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,472.78 : 6,710.49 = 1,352.88 : x
  2. Step 2: Convert to fraction form
    4,472.78/6,710.49 = 1,352.88/x
  3. Step 3: Cross multiply
    4,472.78x = 6,710.49 × 1,352.88
  4. Step 4: Simplify right side
    4,472.78x = 9,078,487.71
  5. Step 5: Solve for x
    x = 9,078,487.71/4,472.78
  6. Step 6: Final answer
    x = 2,029.72

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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.