Home / 2,451.38-3,391.79-2,137.28

Finding the Fourth Proportional to 2,451.38, 3,391.79 and 2,137.28

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Solution

The fourth proportional to 2,451.38, 3,391.79 and 2,137.28 is: 2,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.38 : 3,391.79 = 2,137.28 : x
  2. Step 2: Convert to fraction form
    2,451.38/3,391.79 = 2,137.28/x
  3. Step 3: Cross multiply
    2,451.38x = 3,391.79 × 2,137.28
  4. Step 4: Simplify right side
    2,451.38x = 7,249,177.29
  5. Step 5: Solve for x
    x = 7,249,177.29/2,451.38
  6. Step 6: Final answer
    x = 2,957.19

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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.