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Finding the Fourth Proportional to 9,079.64, 12,531.07 and 5,100.74

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Solution

The fourth proportional to 9,079.64, 12,531.07 and 5,100.74 is: 7,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.64 : 12,531.07 = 5,100.74 : x
  2. Step 2: Convert to fraction form
    9,079.64/12,531.07 = 5,100.74/x
  3. Step 3: Cross multiply
    9,079.64x = 12,531.07 × 5,100.74
  4. Step 4: Simplify right side
    9,079.64x = 63,917,757.90
  5. Step 5: Solve for x
    x = 63,917,757.90/9,079.64
  6. Step 6: Final answer
    x = 7,039.68

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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.