Home / 5,128.32-7,680.96-3,174.96

Finding the Fourth Proportional to 5,128.32, 7,680.96 and 3,174.96

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Solution

The fourth proportional to 5,128.32, 7,680.96 and 3,174.96 is: 4,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.32 : 7,680.96 = 3,174.96 : x
  2. Step 2: Convert to fraction form
    5,128.32/7,680.96 = 3,174.96/x
  3. Step 3: Cross multiply
    5,128.32x = 7,680.96 × 3,174.96
  4. Step 4: Simplify right side
    5,128.32x = 24,386,740.76
  5. Step 5: Solve for x
    x = 24,386,740.76/5,128.32
  6. Step 6: Final answer
    x = 4,755.31

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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.