Home / 5,414.47-8,120.76-1,519.18

Finding the Fourth Proportional to 5,414.47, 8,120.76 and 1,519.18

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Solution

The fourth proportional to 5,414.47, 8,120.76 and 1,519.18 is: 2,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.47 : 8,120.76 = 1,519.18 : x
  2. Step 2: Convert to fraction form
    5,414.47/8,120.76 = 1,519.18/x
  3. Step 3: Cross multiply
    5,414.47x = 8,120.76 × 1,519.18
  4. Step 4: Simplify right side
    5,414.47x = 12,336,896.18
  5. Step 5: Solve for x
    x = 12,336,896.18/5,414.47
  6. Step 6: Final answer
    x = 2,278.50

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1.5x scale

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.