Home / 1,243.28-1,857.58-1,200.20

Finding the Fourth Proportional to 1,243.28, 1,857.58 and 1,200.20

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Solution

The fourth proportional to 1,243.28, 1,857.58 and 1,200.20 is: 1,793.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.28 : 1,857.58 = 1,200.20 : x
  2. Step 2: Convert to fraction form
    1,243.28/1,857.58 = 1,200.20/x
  3. Step 3: Cross multiply
    1,243.28x = 1,857.58 × 1,200.20
  4. Step 4: Simplify right side
    1,243.28x = 2,229,467.52
  5. Step 5: Solve for x
    x = 2,229,467.52/1,243.28
  6. Step 6: Final answer
    x = 1,793.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.