Home / 2,278.50-3,144.47-1,520.99

Finding the Fourth Proportional to 2,278.50, 3,144.47 and 1,520.99

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Solution

The fourth proportional to 2,278.50, 3,144.47 and 1,520.99 is: 2,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.50 : 3,144.47 = 1,520.99 : x
  2. Step 2: Convert to fraction form
    2,278.50/3,144.47 = 1,520.99/x
  3. Step 3: Cross multiply
    2,278.50x = 3,144.47 × 1,520.99
  4. Step 4: Simplify right side
    2,278.50x = 4,782,691.70
  5. Step 5: Solve for x
    x = 4,782,691.70/2,278.50
  6. Step 6: Final answer
    x = 2,099.05

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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.