Home / 5,278.20-7,283.88-3,154.70

Finding the Fourth Proportional to 5,278.20, 7,283.88 and 3,154.70

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Solution

The fourth proportional to 5,278.20, 7,283.88 and 3,154.70 is: 4,353.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.20 : 7,283.88 = 3,154.70 : x
  2. Step 2: Convert to fraction form
    5,278.20/7,283.88 = 3,154.70/x
  3. Step 3: Cross multiply
    5,278.20x = 7,283.88 × 3,154.70
  4. Step 4: Simplify right side
    5,278.20x = 22,978,456.24
  5. Step 5: Solve for x
    x = 22,978,456.24/5,278.20
  6. Step 6: Final answer
    x = 4,353.46

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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.