Home / 2,691.57-4,038.39-1,304.80

Finding the Fourth Proportional to 2,691.57, 4,038.39 and 1,304.80

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Solution

The fourth proportional to 2,691.57, 4,038.39 and 1,304.80 is: 1,957.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.57 : 4,038.39 = 1,304.80 : x
  2. Step 2: Convert to fraction form
    2,691.57/4,038.39 = 1,304.80/x
  3. Step 3: Cross multiply
    2,691.57x = 4,038.39 × 1,304.80
  4. Step 4: Simplify right side
    2,691.57x = 5,269,291.27
  5. Step 5: Solve for x
    x = 5,269,291.27/2,691.57
  6. Step 6: Final answer
    x = 1,957.70

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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.