Home / 3,387.96-5,079.50-1,306.20

Finding the Fourth Proportional to 3,387.96, 5,079.50 and 1,306.20

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Solution

The fourth proportional to 3,387.96, 5,079.50 and 1,306.20 is: 1,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.96 : 5,079.50 = 1,306.20 : x
  2. Step 2: Convert to fraction form
    3,387.96/5,079.50 = 1,306.20/x
  3. Step 3: Cross multiply
    3,387.96x = 5,079.50 × 1,306.20
  4. Step 4: Simplify right side
    3,387.96x = 6,634,842.90
  5. Step 5: Solve for x
    x = 6,634,842.90/3,387.96
  6. Step 6: Final answer
    x = 1,958.36

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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.