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Finding the Fourth Proportional to 9,041.20, 13,561.80 and 8,385.10

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Solution

The fourth proportional to 9,041.20, 13,561.80 and 8,385.10 is: 12,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,041.20 : 13,561.80 = 8,385.10 : x
  2. Step 2: Convert to fraction form
    9,041.20/13,561.80 = 8,385.10/x
  3. Step 3: Cross multiply
    9,041.20x = 13,561.80 × 8,385.10
  4. Step 4: Simplify right side
    9,041.20x = 113,717,049.18
  5. Step 5: Solve for x
    x = 113,717,049.18/9,041.20
  6. Step 6: Final answer
    x = 12,577.65

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Half scale
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Double 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.