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Finding the Fourth Proportional to 9,000.62, 13,500.91 and 3,158.90

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Solution

The fourth proportional to 9,000.62, 13,500.91 and 3,158.90 is: 4,738.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.62 : 13,500.91 = 3,158.90 : x
  2. Step 2: Convert to fraction form
    9,000.62/13,500.91 = 3,158.90/x
  3. Step 3: Cross multiply
    9,000.62x = 13,500.91 × 3,158.90
  4. Step 4: Simplify right side
    9,000.62x = 42,648,024.60
  5. Step 5: Solve for x
    x = 42,648,024.60/9,000.62
  6. Step 6: Final answer
    x = 4,738.34

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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.