Home / 3,401.31-5,101.50-1,321.13

Finding the Fourth Proportional to 3,401.31, 5,101.50 and 1,321.13

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Solution

The fourth proportional to 3,401.31, 5,101.50 and 1,321.13 is: 1,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.31 : 5,101.50 = 1,321.13 : x
  2. Step 2: Convert to fraction form
    3,401.31/5,101.50 = 1,321.13/x
  3. Step 3: Cross multiply
    3,401.31x = 5,101.50 × 1,321.13
  4. Step 4: Simplify right side
    3,401.31x = 6,739,719.19
  5. Step 5: Solve for x
    x = 6,739,719.19/3,401.31
  6. Step 6: Final answer
    x = 1,981.51

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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.