Home / 5,517.78-7,612.95-3,159.46

Finding the Fourth Proportional to 5,517.78, 7,612.95 and 3,159.46

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Solution

The fourth proportional to 5,517.78, 7,612.95 and 3,159.46 is: 4,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.78 : 7,612.95 = 3,159.46 : x
  2. Step 2: Convert to fraction form
    5,517.78/7,612.95 = 3,159.46/x
  3. Step 3: Cross multiply
    5,517.78x = 7,612.95 × 3,159.46
  4. Step 4: Simplify right side
    5,517.78x = 24,052,811.01
  5. Step 5: Solve for x
    x = 24,052,811.01/5,517.78
  6. Step 6: Final answer
    x = 4,359.15

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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.