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Finding the Fourth Proportional to 3,607.70, 5,411.55 and 3,000.20

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Solution

The fourth proportional to 3,607.70, 5,411.55 and 3,000.20 is: 4,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.70 : 5,411.55 = 3,000.20 : x
  2. Step 2: Convert to fraction form
    3,607.70/5,411.55 = 3,000.20/x
  3. Step 3: Cross multiply
    3,607.70x = 5,411.55 × 3,000.20
  4. Step 4: Simplify right side
    3,607.70x = 16,235,732.31
  5. Step 5: Solve for x
    x = 16,235,732.31/3,607.70
  6. Step 6: Final answer
    x = 4,500.30

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Half scale
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Similar ratio
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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.