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Finding the Fourth Proportional to 7,104.78, 10,657.17 and 1,910.52

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Solution

The fourth proportional to 7,104.78, 10,657.17 and 1,910.52 is: 2,865.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.78 : 10,657.17 = 1,910.52 : x
  2. Step 2: Convert to fraction form
    7,104.78/10,657.17 = 1,910.52/x
  3. Step 3: Cross multiply
    7,104.78x = 10,657.17 × 1,910.52
  4. Step 4: Simplify right side
    7,104.78x = 20,360,736.43
  5. Step 5: Solve for x
    x = 20,360,736.43/7,104.78
  6. Step 6: Final answer
    x = 2,865.78

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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.