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Finding the Fourth Proportional to 5,000.81, 7,499.90 and 1,489.87

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Solution

The fourth proportional to 5,000.81, 7,499.90 and 1,489.87 is: 2,234.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,000.81 : 7,499.90 = 1,489.87 : x
  2. Step 2: Convert to fraction form
    5,000.81/7,499.90 = 1,489.87/x
  3. Step 3: Cross multiply
    5,000.81x = 7,499.90 × 1,489.87
  4. Step 4: Simplify right side
    5,000.81x = 11,173,876.01
  5. Step 5: Solve for x
    x = 11,173,876.01/5,000.81
  6. Step 6: Final answer
    x = 2,234.41

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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.