Home / 3,139.85-4,710.32-1,291.97

Finding the Fourth Proportional to 3,139.85, 4,710.32 and 1,291.97

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Solution

The fourth proportional to 3,139.85, 4,710.32 and 1,291.97 is: 1,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.85 : 4,710.32 = 1,291.97 : x
  2. Step 2: Convert to fraction form
    3,139.85/4,710.32 = 1,291.97/x
  3. Step 3: Cross multiply
    3,139.85x = 4,710.32 × 1,291.97
  4. Step 4: Simplify right side
    3,139.85x = 6,085,592.13
  5. Step 5: Solve for x
    x = 6,085,592.13/3,139.85
  6. Step 6: Final answer
    x = 1,938.18

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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.