Home / 2,871.12-3,961.20-1,823.04

Finding the Fourth Proportional to 2,871.12, 3,961.20 and 1,823.04

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Solution

The fourth proportional to 2,871.12, 3,961.20 and 1,823.04 is: 2,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.12 : 3,961.20 = 1,823.04 : x
  2. Step 2: Convert to fraction form
    2,871.12/3,961.20 = 1,823.04/x
  3. Step 3: Cross multiply
    2,871.12x = 3,961.20 × 1,823.04
  4. Step 4: Simplify right side
    2,871.12x = 7,221,426.05
  5. Step 5: Solve for x
    x = 7,221,426.05/2,871.12
  6. Step 6: Final answer
    x = 2,515.19

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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.