Home / 5,109.76-7,052.09-2,871.73

Finding the Fourth Proportional to 5,109.76, 7,052.09 and 2,871.73

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Solution

The fourth proportional to 5,109.76, 7,052.09 and 2,871.73 is: 3,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.76 : 7,052.09 = 2,871.73 : x
  2. Step 2: Convert to fraction form
    5,109.76/7,052.09 = 2,871.73/x
  3. Step 3: Cross multiply
    5,109.76x = 7,052.09 × 2,871.73
  4. Step 4: Simplify right side
    5,109.76x = 20,251,698.42
  5. Step 5: Solve for x
    x = 20,251,698.42/5,109.76
  6. Step 6: Final answer
    x = 3,963.34

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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.