Home / 5,247.76-7,871.66-2,127.83

Finding the Fourth Proportional to 5,247.76, 7,871.66 and 2,127.83

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Solution

The fourth proportional to 5,247.76, 7,871.66 and 2,127.83 is: 3,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.76 : 7,871.66 = 2,127.83 : x
  2. Step 2: Convert to fraction form
    5,247.76/7,871.66 = 2,127.83/x
  3. Step 3: Cross multiply
    5,247.76x = 7,871.66 × 2,127.83
  4. Step 4: Simplify right side
    5,247.76x = 16,749,554.30
  5. Step 5: Solve for x
    x = 16,749,554.30/5,247.76
  6. Step 6: Final answer
    x = 3,191.75

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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.