Home / 8,729.74-13,099.12-3,186.84

Finding the Fourth Proportional to 8,729.74, 13,099.12 and 3,186.84

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Solution

The fourth proportional to 8,729.74, 13,099.12 and 3,186.84 is: 4,781.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.74 : 13,099.12 = 3,186.84 : x
  2. Step 2: Convert to fraction form
    8,729.74/13,099.12 = 3,186.84/x
  3. Step 3: Cross multiply
    8,729.74x = 13,099.12 × 3,186.84
  4. Step 4: Simplify right side
    8,729.74x = 41,744,799.58
  5. Step 5: Solve for x
    x = 41,744,799.58/8,729.74
  6. Step 6: Final answer
    x = 4,781.91

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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.