Home / 2,982.30-4,112.82-1,862.88

Finding the Fourth Proportional to 2,982.30, 4,112.82 and 1,862.88

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Solution

The fourth proportional to 2,982.30, 4,112.82 and 1,862.88 is: 2,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.30 : 4,112.82 = 1,862.88 : x
  2. Step 2: Convert to fraction form
    2,982.30/4,112.82 = 1,862.88/x
  3. Step 3: Cross multiply
    2,982.30x = 4,112.82 × 1,862.88
  4. Step 4: Simplify right side
    2,982.30x = 7,661,690.12
  5. Step 5: Solve for x
    x = 7,661,690.12/2,982.30
  6. Step 6: Final answer
    x = 2,569.05

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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.