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Finding the Fourth Proportional to 8,066.40, 12,101.40 and 6,316.80

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Solution

The fourth proportional to 8,066.40, 12,101.40 and 6,316.80 is: 9,476.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,066.40 : 12,101.40 = 6,316.80 : x
  2. Step 2: Convert to fraction form
    8,066.40/12,101.40 = 6,316.80/x
  3. Step 3: Cross multiply
    8,066.40x = 12,101.40 × 6,316.80
  4. Step 4: Simplify right side
    8,066.40x = 76,442,123.52
  5. Step 5: Solve for x
    x = 76,442,123.52/8,066.40
  6. Step 6: Final answer
    x = 9,476.61

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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.