Home / 2,639.91-3,642.94-1,577.70

Finding the Fourth Proportional to 2,639.91, 3,642.94 and 1,577.70

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Solution

The fourth proportional to 2,639.91, 3,642.94 and 1,577.70 is: 2,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.91 : 3,642.94 = 1,577.70 : x
  2. Step 2: Convert to fraction form
    2,639.91/3,642.94 = 1,577.70/x
  3. Step 3: Cross multiply
    2,639.91x = 3,642.94 × 1,577.70
  4. Step 4: Simplify right side
    2,639.91x = 5,747,458.55
  5. Step 5: Solve for x
    x = 5,747,458.55/2,639.91
  6. Step 6: Final answer
    x = 2,177.14

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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.