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Finding the Fourth Proportional to 5,000.40, 7,491.60 and 3,967.20

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Solution

The fourth proportional to 5,000.40, 7,491.60 and 3,967.20 is: 5,943.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,000.40 : 7,491.60 = 3,967.20 : x
  2. Step 2: Convert to fraction form
    5,000.40/7,491.60 = 3,967.20/x
  3. Step 3: Cross multiply
    5,000.40x = 7,491.60 × 3,967.20
  4. Step 4: Simplify right side
    5,000.40x = 29,720,675.52
  5. Step 5: Solve for x
    x = 29,720,675.52/5,000.40
  6. Step 6: Final answer
    x = 5,943.66

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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.