Home / 2,862.60-3,957.61-2,115.38

Finding the Fourth Proportional to 2,862.60, 3,957.61 and 2,115.38

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Solution

The fourth proportional to 2,862.60, 3,957.61 and 2,115.38 is: 2,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.60 : 3,957.61 = 2,115.38 : x
  2. Step 2: Convert to fraction form
    2,862.60/3,957.61 = 2,115.38/x
  3. Step 3: Cross multiply
    2,862.60x = 3,957.61 × 2,115.38
  4. Step 4: Simplify right side
    2,862.60x = 8,371,849.04
  5. Step 5: Solve for x
    x = 8,371,849.04/2,862.60
  6. Step 6: Final answer
    x = 2,924.56

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1.5x scale

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.