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Finding the Fourth Proportional to 8,270.28, 12,390.84 and 8,066.16

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Solution

The fourth proportional to 8,270.28, 12,390.84 and 8,066.16 is: 12,085.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.28 : 12,390.84 = 8,066.16 : x
  2. Step 2: Convert to fraction form
    8,270.28/12,390.84 = 8,066.16/x
  3. Step 3: Cross multiply
    8,270.28x = 12,390.84 × 8,066.16
  4. Step 4: Simplify right side
    8,270.28x = 99,946,497.97
  5. Step 5: Solve for x
    x = 99,946,497.97/8,270.28
  6. Step 6: Final answer
    x = 12,085.02

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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.