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Finding the Fourth Proportional to 8,761.80, 12,084.90 and 6,205.48

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Solution

The fourth proportional to 8,761.80, 12,084.90 and 6,205.48 is: 8,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.80 : 12,084.90 = 6,205.48 : x
  2. Step 2: Convert to fraction form
    8,761.80/12,084.90 = 6,205.48/x
  3. Step 3: Cross multiply
    8,761.80x = 12,084.90 × 6,205.48
  4. Step 4: Simplify right side
    8,761.80x = 74,992,605.25
  5. Step 5: Solve for x
    x = 74,992,605.25/8,761.80
  6. Step 6: Final answer
    x = 8,559.04

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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.