Home / 5,311.59-7,326.90-3,318.72

Finding the Fourth Proportional to 5,311.59, 7,326.90 and 3,318.72

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Solution

The fourth proportional to 5,311.59, 7,326.90 and 3,318.72 is: 4,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.59 : 7,326.90 = 3,318.72 : x
  2. Step 2: Convert to fraction form
    5,311.59/7,326.90 = 3,318.72/x
  3. Step 3: Cross multiply
    5,311.59x = 7,326.90 × 3,318.72
  4. Step 4: Simplify right side
    5,311.59x = 24,315,929.57
  5. Step 5: Solve for x
    x = 24,315,929.57/5,311.59
  6. Step 6: Final answer
    x = 4,577.90

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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.