Home / 3,139.97-4,711.11-1,290.59

Finding the Fourth Proportional to 3,139.97, 4,711.11 and 1,290.59

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Solution

The fourth proportional to 3,139.97, 4,711.11 and 1,290.59 is: 1,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.97 : 4,711.11 = 1,290.59 : x
  2. Step 2: Convert to fraction form
    3,139.97/4,711.11 = 1,290.59/x
  3. Step 3: Cross multiply
    3,139.97x = 4,711.11 × 1,290.59
  4. Step 4: Simplify right side
    3,139.97x = 6,080,111.45
  5. Step 5: Solve for x
    x = 6,080,111.45/3,139.97
  6. Step 6: Final answer
    x = 1,936.36

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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.