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Finding the Fourth Proportional to 8,659.80, 12,966.23 and 4,491.07

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Solution

The fourth proportional to 8,659.80, 12,966.23 and 4,491.07 is: 6,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.80 : 12,966.23 = 4,491.07 : x
  2. Step 2: Convert to fraction form
    8,659.80/12,966.23 = 4,491.07/x
  3. Step 3: Cross multiply
    8,659.80x = 12,966.23 × 4,491.07
  4. Step 4: Simplify right side
    8,659.80x = 58,232,181.73
  5. Step 5: Solve for x
    x = 58,232,181.73/8,659.80
  6. Step 6: Final answer
    x = 6,724.43

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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.