Home / 5,311.80-7,329.24-3,215.88

Finding the Fourth Proportional to 5,311.80, 7,329.24 and 3,215.88

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Solution

The fourth proportional to 5,311.80, 7,329.24 and 3,215.88 is: 4,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.80 : 7,329.24 = 3,215.88 : x
  2. Step 2: Convert to fraction form
    5,311.80/7,329.24 = 3,215.88/x
  3. Step 3: Cross multiply
    5,311.80x = 7,329.24 × 3,215.88
  4. Step 4: Simplify right side
    5,311.80x = 23,569,956.33
  5. Step 5: Solve for x
    x = 23,569,956.33/5,311.80
  6. Step 6: Final answer
    x = 4,437.28

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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.