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Finding the Fourth Proportional to 5,000.72, 7,508.79 and 4,230.84

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Solution

The fourth proportional to 5,000.72, 7,508.79 and 4,230.84 is: 6,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,000.72 : 7,508.79 = 4,230.84 : x
  2. Step 2: Convert to fraction form
    5,000.72/7,508.79 = 4,230.84/x
  3. Step 3: Cross multiply
    5,000.72x = 7,508.79 × 4,230.84
  4. Step 4: Simplify right side
    5,000.72x = 31,768,489.08
  5. Step 5: Solve for x
    x = 31,768,489.08/5,000.72
  6. Step 6: Final answer
    x = 6,352.78

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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.