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Finding the Fourth Proportional to 9,663.68, 13,336.44 and 5,472.20

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Solution

The fourth proportional to 9,663.68, 13,336.44 and 5,472.20 is: 7,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,663.68 : 13,336.44 = 5,472.20 : x
  2. Step 2: Convert to fraction form
    9,663.68/13,336.44 = 5,472.20/x
  3. Step 3: Cross multiply
    9,663.68x = 13,336.44 × 5,472.20
  4. Step 4: Simplify right side
    9,663.68x = 72,979,666.97
  5. Step 5: Solve for x
    x = 72,979,666.97/9,663.68
  6. Step 6: Final answer
    x = 7,551.95

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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.