Home / 2,910.78-4,016.25-1,862.64

Finding the Fourth Proportional to 2,910.78, 4,016.25 and 1,862.64

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Solution

The fourth proportional to 2,910.78, 4,016.25 and 1,862.64 is: 2,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.78 : 4,016.25 = 1,862.64 : x
  2. Step 2: Convert to fraction form
    2,910.78/4,016.25 = 1,862.64/x
  3. Step 3: Cross multiply
    2,910.78x = 4,016.25 × 1,862.64
  4. Step 4: Simplify right side
    2,910.78x = 7,480,827.90
  5. Step 5: Solve for x
    x = 7,480,827.90/2,910.78
  6. Step 6: Final answer
    x = 2,570.04

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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.