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Finding the Fourth Proportional to 8,660.76, 11,951.88 and 5,125.68

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Solution

The fourth proportional to 8,660.76, 11,951.88 and 5,125.68 is: 7,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.76 : 11,951.88 = 5,125.68 : x
  2. Step 2: Convert to fraction form
    8,660.76/11,951.88 = 5,125.68/x
  3. Step 3: Cross multiply
    8,660.76x = 11,951.88 × 5,125.68
  4. Step 4: Simplify right side
    8,660.76x = 61,261,512.28
  5. Step 5: Solve for x
    x = 61,261,512.28/8,660.76
  6. Step 6: Final answer
    x = 7,073.46

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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.