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Finding the Fourth Proportional to 5,000.52, 7,500.80 and 2,780.72

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Solution

The fourth proportional to 5,000.52, 7,500.80 and 2,780.72 is: 4,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,000.52 : 7,500.80 = 2,780.72 : x
  2. Step 2: Convert to fraction form
    5,000.52/7,500.80 = 2,780.72/x
  3. Step 3: Cross multiply
    5,000.52x = 7,500.80 × 2,780.72
  4. Step 4: Simplify right side
    5,000.52x = 20,857,624.58
  5. Step 5: Solve for x
    x = 20,857,624.58/5,000.52
  6. Step 6: Final answer
    x = 4,171.09

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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.