Home / 10,208.12-15,311.22-3,187.88

Finding the Fourth Proportional to 10,208.12, 15,311.22 and 3,187.88

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Solution

The fourth proportional to 10,208.12, 15,311.22 and 3,187.88 is: 4,781.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,208.12 : 15,311.22 = 3,187.88 : x
  2. Step 2: Convert to fraction form
    10,208.12/15,311.22 = 3,187.88/x
  3. Step 3: Cross multiply
    10,208.12x = 15,311.22 × 3,187.88
  4. Step 4: Simplify right side
    10,208.12x = 48,810,332.01
  5. Step 5: Solve for x
    x = 48,810,332.01/10,208.12
  6. Step 6: Final answer
    x = 4,781.52

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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.