Home / 5,143.80-7,098.42-2,785.92

Finding the Fourth Proportional to 5,143.80, 7,098.42 and 2,785.92

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Solution

The fourth proportional to 5,143.80, 7,098.42 and 2,785.92 is: 3,844.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.80 : 7,098.42 = 2,785.92 : x
  2. Step 2: Convert to fraction form
    5,143.80/7,098.42 = 2,785.92/x
  3. Step 3: Cross multiply
    5,143.80x = 7,098.42 × 2,785.92
  4. Step 4: Simplify right side
    5,143.80x = 19,775,630.25
  5. Step 5: Solve for x
    x = 19,775,630.25/5,143.80
  6. Step 6: Final answer
    x = 3,844.56

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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.