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Finding the Fourth Proportional to 6,488.48, 8,949.32 and 4,472.55

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Solution

The fourth proportional to 6,488.48, 8,949.32 and 4,472.55 is: 6,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.48 : 8,949.32 = 4,472.55 : x
  2. Step 2: Convert to fraction form
    6,488.48/8,949.32 = 4,472.55/x
  3. Step 3: Cross multiply
    6,488.48x = 8,949.32 × 4,472.55
  4. Step 4: Simplify right side
    6,488.48x = 40,026,275.58
  5. Step 5: Solve for x
    x = 40,026,275.58/6,488.48
  6. Step 6: Final answer
    x = 6,168.82

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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.