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Finding the Fourth Proportional to 7,285.42, 10,928.13 and 2,902.92

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Solution

The fourth proportional to 7,285.42, 10,928.13 and 2,902.92 is: 4,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.42 : 10,928.13 = 2,902.92 : x
  2. Step 2: Convert to fraction form
    7,285.42/10,928.13 = 2,902.92/x
  3. Step 3: Cross multiply
    7,285.42x = 10,928.13 × 2,902.92
  4. Step 4: Simplify right side
    7,285.42x = 31,723,487.14
  5. Step 5: Solve for x
    x = 31,723,487.14/7,285.42
  6. Step 6: Final answer
    x = 4,354.38

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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.