Home / 3,612.94-5,419.56-1,147.70

Finding the Fourth Proportional to 3,612.94, 5,419.56 and 1,147.70

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Solution

The fourth proportional to 3,612.94, 5,419.56 and 1,147.70 is: 1,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.94 : 5,419.56 = 1,147.70 : x
  2. Step 2: Convert to fraction form
    3,612.94/5,419.56 = 1,147.70/x
  3. Step 3: Cross multiply
    3,612.94x = 5,419.56 × 1,147.70
  4. Step 4: Simplify right side
    3,612.94x = 6,220,042.56
  5. Step 5: Solve for x
    x = 6,220,042.56/3,612.94
  6. Step 6: Final answer
    x = 1,721.60

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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.