Home / 2,979.28-4,469.40-1,247.44

Finding the Fourth Proportional to 2,979.28, 4,469.40 and 1,247.44

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Solution

The fourth proportional to 2,979.28, 4,469.40 and 1,247.44 is: 1,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.28 : 4,469.40 = 1,247.44 : x
  2. Step 2: Convert to fraction form
    2,979.28/4,469.40 = 1,247.44/x
  3. Step 3: Cross multiply
    2,979.28x = 4,469.40 × 1,247.44
  4. Step 4: Simplify right side
    2,979.28x = 5,575,308.34
  5. Step 5: Solve for x
    x = 5,575,308.34/2,979.28
  6. Step 6: Final answer
    x = 1,871.36

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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.