Home / 3,543.17-5,315.28-1,321.43

Finding the Fourth Proportional to 3,543.17, 5,315.28 and 1,321.43

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Solution

The fourth proportional to 3,543.17, 5,315.28 and 1,321.43 is: 1,982.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.17 : 5,315.28 = 1,321.43 : x
  2. Step 2: Convert to fraction form
    3,543.17/5,315.28 = 1,321.43/x
  3. Step 3: Cross multiply
    3,543.17x = 5,315.28 × 1,321.43
  4. Step 4: Simplify right side
    3,543.17x = 7,023,763.84
  5. Step 5: Solve for x
    x = 7,023,763.84/3,543.17
  6. Step 6: Final answer
    x = 1,982.34

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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.