Home / 5,247.87-7,871.85-1,352.13

Finding the Fourth Proportional to 5,247.87, 7,871.85 and 1,352.13

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Solution

The fourth proportional to 5,247.87, 7,871.85 and 1,352.13 is: 2,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.87 : 7,871.85 = 1,352.13 : x
  2. Step 2: Convert to fraction form
    5,247.87/7,871.85 = 1,352.13/x
  3. Step 3: Cross multiply
    5,247.87x = 7,871.85 × 1,352.13
  4. Step 4: Simplify right side
    5,247.87x = 10,643,764.54
  5. Step 5: Solve for x
    x = 10,643,764.54/5,247.87
  6. Step 6: Final answer
    x = 2,028.21

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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.