Home / 2,868.66-3,959.60-1,874.09

Finding the Fourth Proportional to 2,868.66, 3,959.60 and 1,874.09

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Solution

The fourth proportional to 2,868.66, 3,959.60 and 1,874.09 is: 2,586.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.66 : 3,959.60 = 1,874.09 : x
  2. Step 2: Convert to fraction form
    2,868.66/3,959.60 = 1,874.09/x
  3. Step 3: Cross multiply
    2,868.66x = 3,959.60 × 1,874.09
  4. Step 4: Simplify right side
    2,868.66x = 7,420,617.60
  5. Step 5: Solve for x
    x = 7,420,617.60/2,868.66
  6. Step 6: Final answer
    x = 2,586.79

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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.