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Finding the Fourth Proportional to 7,250.40, 10,876.80 and 3,092.40

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Solution

The fourth proportional to 7,250.40, 10,876.80 and 3,092.40 is: 4,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,250.40 : 10,876.80 = 3,092.40 : x
  2. Step 2: Convert to fraction form
    7,250.40/10,876.80 = 3,092.40/x
  3. Step 3: Cross multiply
    7,250.40x = 10,876.80 × 3,092.40
  4. Step 4: Simplify right side
    7,250.40x = 33,635,416.32
  5. Step 5: Solve for x
    x = 33,635,416.32/7,250.40
  6. Step 6: Final answer
    x = 4,639.11

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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.