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Finding the Fourth Proportional to 7,251.40, 10,877.10 and 2,321.20

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Solution

The fourth proportional to 7,251.40, 10,877.10 and 2,321.20 is: 3,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.40 : 10,877.10 = 2,321.20 : x
  2. Step 2: Convert to fraction form
    7,251.40/10,877.10 = 2,321.20/x
  3. Step 3: Cross multiply
    7,251.40x = 10,877.10 × 2,321.20
  4. Step 4: Simplify right side
    7,251.40x = 25,247,924.52
  5. Step 5: Solve for x
    x = 25,247,924.52/7,251.40
  6. Step 6: Final answer
    x = 3,481.80

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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.