Home / 2,871.38-3,962.56-1,629.38

Finding the Fourth Proportional to 2,871.38, 3,962.56 and 1,629.38

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Solution

The fourth proportional to 2,871.38, 3,962.56 and 1,629.38 is: 2,248.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.38 : 3,962.56 = 1,629.38 : x
  2. Step 2: Convert to fraction form
    2,871.38/3,962.56 = 1,629.38/x
  3. Step 3: Cross multiply
    2,871.38x = 3,962.56 × 1,629.38
  4. Step 4: Simplify right side
    2,871.38x = 6,456,516.01
  5. Step 5: Solve for x
    x = 6,456,516.01/2,871.38
  6. Step 6: Final answer
    x = 2,248.58

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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.