Home / 3,073.28-4,239.51-2,078.90

Finding the Fourth Proportional to 3,073.28, 4,239.51 and 2,078.90

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Solution

The fourth proportional to 3,073.28, 4,239.51 and 2,078.90 is: 2,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,073.28 : 4,239.51 = 2,078.90 : x
  2. Step 2: Convert to fraction form
    3,073.28/4,239.51 = 2,078.90/x
  3. Step 3: Cross multiply
    3,073.28x = 4,239.51 × 2,078.90
  4. Step 4: Simplify right side
    3,073.28x = 8,813,496.14
  5. Step 5: Solve for x
    x = 8,813,496.14/3,073.28
  6. Step 6: Final answer
    x = 2,867.78

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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.