Home / 3,727.42-5,143.80-2,155.48

Finding the Fourth Proportional to 3,727.42, 5,143.80 and 2,155.48

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Solution

The fourth proportional to 3,727.42, 5,143.80 and 2,155.48 is: 2,974.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.42 : 5,143.80 = 2,155.48 : x
  2. Step 2: Convert to fraction form
    3,727.42/5,143.80 = 2,155.48/x
  3. Step 3: Cross multiply
    3,727.42x = 5,143.80 × 2,155.48
  4. Step 4: Simplify right side
    3,727.42x = 11,087,358.02
  5. Step 5: Solve for x
    x = 11,087,358.02/3,727.42
  6. Step 6: Final answer
    x = 2,974.54

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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.