Home / 10,207.12-15,309.72-3,186.88

Finding the Fourth Proportional to 10,207.12, 15,309.72 and 3,186.88

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Solution

The fourth proportional to 10,207.12, 15,309.72 and 3,186.88 is: 4,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.12 : 15,309.72 = 3,186.88 : x
  2. Step 2: Convert to fraction form
    10,207.12/15,309.72 = 3,186.88/x
  3. Step 3: Cross multiply
    10,207.12x = 15,309.72 × 3,186.88
  4. Step 4: Simplify right side
    10,207.12x = 48,790,240.47
  5. Step 5: Solve for x
    x = 48,790,240.47/10,207.12
  6. Step 6: Final answer
    x = 4,780.02

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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.