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Finding the Fourth Proportional to 8,761.73, 12,095.57 and 5,578.19

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Solution

The fourth proportional to 8,761.73, 12,095.57 and 5,578.19 is: 7,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.73 : 12,095.57 = 5,578.19 : x
  2. Step 2: Convert to fraction form
    8,761.73/12,095.57 = 5,578.19/x
  3. Step 3: Cross multiply
    8,761.73x = 12,095.57 × 5,578.19
  4. Step 4: Simplify right side
    8,761.73x = 67,471,359.73
  5. Step 5: Solve for x
    x = 67,471,359.73/8,761.73
  6. Step 6: Final answer
    x = 7,700.69

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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.