Home / 3,145.32-4,338.11-2,305.71

Finding the Fourth Proportional to 3,145.32, 4,338.11 and 2,305.71

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Solution

The fourth proportional to 3,145.32, 4,338.11 and 2,305.71 is: 3,180.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.32 : 4,338.11 = 2,305.71 : x
  2. Step 2: Convert to fraction form
    3,145.32/4,338.11 = 2,305.71/x
  3. Step 3: Cross multiply
    3,145.32x = 4,338.11 × 2,305.71
  4. Step 4: Simplify right side
    3,145.32x = 10,002,423.61
  5. Step 5: Solve for x
    x = 10,002,423.61/3,145.32
  6. Step 6: Final answer
    x = 3,180.10

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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.