Home / 2,617.62-3,927.39-1,077.78

Finding the Fourth Proportional to 2,617.62, 3,927.39 and 1,077.78

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Solution

The fourth proportional to 2,617.62, 3,927.39 and 1,077.78 is: 1,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.62 : 3,927.39 = 1,077.78 : x
  2. Step 2: Convert to fraction form
    2,617.62/3,927.39 = 1,077.78/x
  3. Step 3: Cross multiply
    2,617.62x = 3,927.39 × 1,077.78
  4. Step 4: Simplify right side
    2,617.62x = 4,232,862.39
  5. Step 5: Solve for x
    x = 4,232,862.39/2,617.62
  6. Step 6: Final answer
    x = 1,617.07

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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.