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Finding the Fourth Proportional to 7,319.52, 10,079.28 and 7,166.16

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Solution

The fourth proportional to 7,319.52, 10,079.28 and 7,166.16 is: 9,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.52 : 10,079.28 = 7,166.16 : x
  2. Step 2: Convert to fraction form
    7,319.52/10,079.28 = 7,166.16/x
  3. Step 3: Cross multiply
    7,319.52x = 10,079.28 × 7,166.16
  4. Step 4: Simplify right side
    7,319.52x = 72,229,733.16
  5. Step 5: Solve for x
    x = 72,229,733.16/7,319.52
  6. Step 6: Final answer
    x = 9,868.10

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Similar ratio
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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.