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Finding the Fourth Proportional to 8,491.11, 12,726.18 and 6,159.12

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Solution

The fourth proportional to 8,491.11, 12,726.18 and 6,159.12 is: 9,231.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.11 : 12,726.18 = 6,159.12 : x
  2. Step 2: Convert to fraction form
    8,491.11/12,726.18 = 6,159.12/x
  3. Step 3: Cross multiply
    8,491.11x = 12,726.18 × 6,159.12
  4. Step 4: Simplify right side
    8,491.11x = 78,382,069.76
  5. Step 5: Solve for x
    x = 78,382,069.76/8,491.11
  6. Step 6: Final answer
    x = 9,231.07

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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.