Home / 2,092.20-3,139.56-1,543.20

Finding the Fourth Proportional to 2,092.20, 3,139.56 and 1,543.20

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Solution

The fourth proportional to 2,092.20, 3,139.56 and 1,543.20 is: 2,315.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.20 : 3,139.56 = 1,543.20 : x
  2. Step 2: Convert to fraction form
    2,092.20/3,139.56 = 1,543.20/x
  3. Step 3: Cross multiply
    2,092.20x = 3,139.56 × 1,543.20
  4. Step 4: Simplify right side
    2,092.20x = 4,844,968.99
  5. Step 5: Solve for x
    x = 4,844,968.99/2,092.20
  6. Step 6: Final answer
    x = 2,315.73

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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.