Home / 5,178.54-7,769.25-2,871.66

Finding the Fourth Proportional to 5,178.54, 7,769.25 and 2,871.66

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Solution

The fourth proportional to 5,178.54, 7,769.25 and 2,871.66 is: 4,308.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.54 : 7,769.25 = 2,871.66 : x
  2. Step 2: Convert to fraction form
    5,178.54/7,769.25 = 2,871.66/x
  3. Step 3: Cross multiply
    5,178.54x = 7,769.25 × 2,871.66
  4. Step 4: Simplify right side
    5,178.54x = 22,310,644.46
  5. Step 5: Solve for x
    x = 22,310,644.46/5,178.54
  6. Step 6: Final answer
    x = 4,308.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.