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Finding the Fourth Proportional to 8,538.75, 12,805.70 and 6,179.22

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Solution

The fourth proportional to 8,538.75, 12,805.70 and 6,179.22 is: 9,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.75 : 12,805.70 = 6,179.22 : x
  2. Step 2: Convert to fraction form
    8,538.75/12,805.70 = 6,179.22/x
  3. Step 3: Cross multiply
    8,538.75x = 12,805.70 × 6,179.22
  4. Step 4: Simplify right side
    8,538.75x = 79,129,206.66
  5. Step 5: Solve for x
    x = 79,129,206.66/8,538.75
  6. Step 6: Final answer
    x = 9,267.07

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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.