Home / 9,165.22-12,645.08-5,387.18

Finding the Fourth Proportional to 9,165.22, 12,645.08 and 5,387.18

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Solution

The fourth proportional to 9,165.22, 12,645.08 and 5,387.18 is: 7,432.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.22 : 12,645.08 = 5,387.18 : x
  2. Step 2: Convert to fraction form
    9,165.22/12,645.08 = 5,387.18/x
  3. Step 3: Cross multiply
    9,165.22x = 12,645.08 × 5,387.18
  4. Step 4: Simplify right side
    9,165.22x = 68,121,322.07
  5. Step 5: Solve for x
    x = 68,121,322.07/9,165.22
  6. Step 6: Final answer
    x = 7,432.59

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.