Home / 5,305.15-7,960.31-2,142.46

Finding the Fourth Proportional to 5,305.15, 7,960.31 and 2,142.46

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Solution

The fourth proportional to 5,305.15, 7,960.31 and 2,142.46 is: 3,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.15 : 7,960.31 = 2,142.46 : x
  2. Step 2: Convert to fraction form
    5,305.15/7,960.31 = 2,142.46/x
  3. Step 3: Cross multiply
    5,305.15x = 7,960.31 × 2,142.46
  4. Step 4: Simplify right side
    5,305.15x = 17,054,645.76
  5. Step 5: Solve for x
    x = 17,054,645.76/5,305.15
  6. Step 6: Final answer
    x = 3,214.73

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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.