Home / 2,691.60-4,034.70-1,231.80

Finding the Fourth Proportional to 2,691.60, 4,034.70 and 1,231.80

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Solution

The fourth proportional to 2,691.60, 4,034.70 and 1,231.80 is: 1,846.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.60 : 4,034.70 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    2,691.60/4,034.70 = 1,231.80/x
  3. Step 3: Cross multiply
    2,691.60x = 4,034.70 × 1,231.80
  4. Step 4: Simplify right side
    2,691.60x = 4,969,943.46
  5. Step 5: Solve for x
    x = 4,969,943.46/2,691.60
  6. Step 6: Final answer
    x = 1,846.46

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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.