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Finding the Fourth Proportional to 8,458.38, 11,675.84 and 7,572.65

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Solution

The fourth proportional to 8,458.38, 11,675.84 and 7,572.65 is: 10,453.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.38 : 11,675.84 = 7,572.65 : x
  2. Step 2: Convert to fraction form
    8,458.38/11,675.84 = 7,572.65/x
  3. Step 3: Cross multiply
    8,458.38x = 11,675.84 × 7,572.65
  4. Step 4: Simplify right side
    8,458.38x = 88,416,953.53
  5. Step 5: Solve for x
    x = 88,416,953.53/8,458.38
  6. Step 6: Final answer
    x = 10,453.18

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Half scale
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Double scale
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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.