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Finding the Fourth Proportional to 7,291.92, 10,937.88 and 1,819.92

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Solution

The fourth proportional to 7,291.92, 10,937.88 and 1,819.92 is: 2,729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.92 : 10,937.88 = 1,819.92 : x
  2. Step 2: Convert to fraction form
    7,291.92/10,937.88 = 1,819.92/x
  3. Step 3: Cross multiply
    7,291.92x = 10,937.88 × 1,819.92
  4. Step 4: Simplify right side
    7,291.92x = 19,906,066.57
  5. Step 5: Solve for x
    x = 19,906,066.57/7,291.92
  6. Step 6: Final answer
    x = 2,729.88

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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.