Home / 3,140.97-4,712.33-1,387.37

Finding the Fourth Proportional to 3,140.97, 4,712.33 and 1,387.37

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Solution

The fourth proportional to 3,140.97, 4,712.33 and 1,387.37 is: 2,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.97 : 4,712.33 = 1,387.37 : x
  2. Step 2: Convert to fraction form
    3,140.97/4,712.33 = 1,387.37/x
  3. Step 3: Cross multiply
    3,140.97x = 4,712.33 × 1,387.37
  4. Step 4: Simplify right side
    3,140.97x = 6,537,714.77
  5. Step 5: Solve for x
    x = 6,537,714.77/3,140.97
  6. Step 6: Final answer
    x = 2,081.43

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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.