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Finding the Fourth Proportional to 10,660.70, 15,991.05 and 3,265.10

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Solution

The fourth proportional to 10,660.70, 15,991.05 and 3,265.10 is: 4,897.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.70 : 15,991.05 = 3,265.10 : x
  2. Step 2: Convert to fraction form
    10,660.70/15,991.05 = 3,265.10/x
  3. Step 3: Cross multiply
    10,660.70x = 15,991.05 × 3,265.10
  4. Step 4: Simplify right side
    10,660.70x = 52,212,377.36
  5. Step 5: Solve for x
    x = 52,212,377.36/10,660.70
  6. Step 6: Final answer
    x = 4,897.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.