Home / 2,720.43-4,079.97-1,258.20

Finding the Fourth Proportional to 2,720.43, 4,079.97 and 1,258.20

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Solution

The fourth proportional to 2,720.43, 4,079.97 and 1,258.20 is: 1,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.43 : 4,079.97 = 1,258.20 : x
  2. Step 2: Convert to fraction form
    2,720.43/4,079.97 = 1,258.20/x
  3. Step 3: Cross multiply
    2,720.43x = 4,079.97 × 1,258.20
  4. Step 4: Simplify right side
    2,720.43x = 5,133,418.25
  5. Step 5: Solve for x
    x = 5,133,418.25/2,720.43
  6. Step 6: Final answer
    x = 1,886.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.