Home / 3,120.28-4,305.78-2,458.84

Finding the Fourth Proportional to 3,120.28, 4,305.78 and 2,458.84

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Solution

The fourth proportional to 3,120.28, 4,305.78 and 2,458.84 is: 3,393.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.28 : 4,305.78 = 2,458.84 : x
  2. Step 2: Convert to fraction form
    3,120.28/4,305.78 = 2,458.84/x
  3. Step 3: Cross multiply
    3,120.28x = 4,305.78 × 2,458.84
  4. Step 4: Simplify right side
    3,120.28x = 10,587,224.10
  5. Step 5: Solve for x
    x = 10,587,224.10/3,120.28
  6. Step 6: Final answer
    x = 3,393.04

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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.