Home / 10,206.27-15,310.80-3,186.90

Finding the Fourth Proportional to 10,206.27, 15,310.80 and 3,186.90

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Solution

The fourth proportional to 10,206.27, 15,310.80 and 3,186.90 is: 4,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,206.27 : 15,310.80 = 3,186.90 : x
  2. Step 2: Convert to fraction form
    10,206.27/15,310.80 = 3,186.90/x
  3. Step 3: Cross multiply
    10,206.27x = 15,310.80 × 3,186.90
  4. Step 4: Simplify right side
    10,206.27x = 48,793,988.52
  5. Step 5: Solve for x
    x = 48,793,988.52/10,206.27
  6. Step 6: Final answer
    x = 4,780.79

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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.