Home / 2,728.47-4,092.21-1,247.36

Finding the Fourth Proportional to 2,728.47, 4,092.21 and 1,247.36

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Solution

The fourth proportional to 2,728.47, 4,092.21 and 1,247.36 is: 1,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.47 : 4,092.21 = 1,247.36 : x
  2. Step 2: Convert to fraction form
    2,728.47/4,092.21 = 1,247.36/x
  3. Step 3: Cross multiply
    2,728.47x = 4,092.21 × 1,247.36
  4. Step 4: Simplify right side
    2,728.47x = 5,104,438.60
  5. Step 5: Solve for x
    x = 5,104,438.60/2,728.47
  6. Step 6: Final answer
    x = 1,870.81

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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.