Home / 2,180.38-3,007.87-1,295.56

Finding the Fourth Proportional to 2,180.38, 3,007.87 and 1,295.56

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Solution

The fourth proportional to 2,180.38, 3,007.87 and 1,295.56 is: 1,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.38 : 3,007.87 = 1,295.56 : x
  2. Step 2: Convert to fraction form
    2,180.38/3,007.87 = 1,295.56/x
  3. Step 3: Cross multiply
    2,180.38x = 3,007.87 × 1,295.56
  4. Step 4: Simplify right side
    2,180.38x = 3,896,874.58
  5. Step 5: Solve for x
    x = 3,896,874.58/2,180.38
  6. Step 6: Final answer
    x = 1,787.24

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1.5x scale

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.