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Finding the Fourth Proportional to 8,867.84, 12,238.56 and 5,512.80

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Solution

The fourth proportional to 8,867.84, 12,238.56 and 5,512.80 is: 7,608.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.84 : 12,238.56 = 5,512.80 : x
  2. Step 2: Convert to fraction form
    8,867.84/12,238.56 = 5,512.80/x
  3. Step 3: Cross multiply
    8,867.84x = 12,238.56 × 5,512.80
  4. Step 4: Simplify right side
    8,867.84x = 67,468,733.57
  5. Step 5: Solve for x
    x = 67,468,733.57/8,867.84
  6. Step 6: Final answer
    x = 7,608.25

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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.