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Finding the Fourth Proportional to 8,270.10, 12,405.15 and 2,427.17

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Solution

The fourth proportional to 8,270.10, 12,405.15 and 2,427.17 is: 3,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.10 : 12,405.15 = 2,427.17 : x
  2. Step 2: Convert to fraction form
    8,270.10/12,405.15 = 2,427.17/x
  3. Step 3: Cross multiply
    8,270.10x = 12,405.15 × 2,427.17
  4. Step 4: Simplify right side
    8,270.10x = 30,109,345.90
  5. Step 5: Solve for x
    x = 30,109,345.90/8,270.10
  6. Step 6: Final answer
    x = 3,640.75

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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.