Home / 3,139.28-4,332.20-1,742.03

Finding the Fourth Proportional to 3,139.28, 4,332.20 and 1,742.03

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Solution

The fourth proportional to 3,139.28, 4,332.20 and 1,742.03 is: 2,403.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.28 : 4,332.20 = 1,742.03 : x
  2. Step 2: Convert to fraction form
    3,139.28/4,332.20 = 1,742.03/x
  3. Step 3: Cross multiply
    3,139.28x = 4,332.20 × 1,742.03
  4. Step 4: Simplify right side
    3,139.28x = 7,546,791.99
  5. Step 5: Solve for x
    x = 7,546,791.99/3,139.28
  6. Step 6: Final answer
    x = 2,403.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.