Home / 2,862.12-3,928.66-2,540.28

Finding the Fourth Proportional to 2,862.12, 3,928.66 and 2,540.28

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Solution

The fourth proportional to 2,862.12, 3,928.66 and 2,540.28 is: 3,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.12 : 3,928.66 = 2,540.28 : x
  2. Step 2: Convert to fraction form
    2,862.12/3,928.66 = 2,540.28/x
  3. Step 3: Cross multiply
    2,862.12x = 3,928.66 × 2,540.28
  4. Step 4: Simplify right side
    2,862.12x = 9,979,896.42
  5. Step 5: Solve for x
    x = 9,979,896.42/2,862.12
  6. Step 6: Final answer
    x = 3,486.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.