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Finding the Fourth Proportional to 8,649.18, 12,988.35 and 8,581.14

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Solution

The fourth proportional to 8,649.18, 12,988.35 and 8,581.14 is: 12,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.18 : 12,988.35 = 8,581.14 : x
  2. Step 2: Convert to fraction form
    8,649.18/12,988.35 = 8,581.14/x
  3. Step 3: Cross multiply
    8,649.18x = 12,988.35 × 8,581.14
  4. Step 4: Simplify right side
    8,649.18x = 111,454,849.72
  5. Step 5: Solve for x
    x = 111,454,849.72/8,649.18
  6. Step 6: Final answer
    x = 12,886.18

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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.