Home / 3,885.90-5,829.76-1,112.61

Finding the Fourth Proportional to 3,885.90, 5,829.76 and 1,112.61

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Solution

The fourth proportional to 3,885.90, 5,829.76 and 1,112.61 is: 1,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.90 : 5,829.76 = 1,112.61 : x
  2. Step 2: Convert to fraction form
    3,885.90/5,829.76 = 1,112.61/x
  3. Step 3: Cross multiply
    3,885.90x = 5,829.76 × 1,112.61
  4. Step 4: Simplify right side
    3,885.90x = 6,486,249.27
  5. Step 5: Solve for x
    x = 6,486,249.27/3,885.90
  6. Step 6: Final answer
    x = 1,669.18

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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.