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Finding the Fourth Proportional to 8,859.24, 12,231 and 7,875.18

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Solution

The fourth proportional to 8,859.24, 12,231 and 7,875.18 is: 10,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.24 : 12,231 = 7,875.18 : x
  2. Step 2: Convert to fraction form
    8,859.24/12,231 = 7,875.18/x
  3. Step 3: Cross multiply
    8,859.24x = 12,231 × 7,875.18
  4. Step 4: Simplify right side
    8,859.24x = 96,321,326.58
  5. Step 5: Solve for x
    x = 96,321,326.58/8,859.24
  6. Step 6: Final answer
    x = 10,872.41

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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.