Home / 3,146.78-4,340.18-2,082.68

Finding the Fourth Proportional to 3,146.78, 4,340.18 and 2,082.68

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Solution

The fourth proportional to 3,146.78, 4,340.18 and 2,082.68 is: 2,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.78 : 4,340.18 = 2,082.68 : x
  2. Step 2: Convert to fraction form
    3,146.78/4,340.18 = 2,082.68/x
  3. Step 3: Cross multiply
    3,146.78x = 4,340.18 × 2,082.68
  4. Step 4: Simplify right side
    3,146.78x = 9,039,205.86
  5. Step 5: Solve for x
    x = 9,039,205.86/3,146.78
  6. Step 6: Final answer
    x = 2,872.52

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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.