Home / 2,979.84-4,469.76-1,247.52

Finding the Fourth Proportional to 2,979.84, 4,469.76 and 1,247.52

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Solution

The fourth proportional to 2,979.84, 4,469.76 and 1,247.52 is: 1,871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.84 : 4,469.76 = 1,247.52 : x
  2. Step 2: Convert to fraction form
    2,979.84/4,469.76 = 1,247.52/x
  3. Step 3: Cross multiply
    2,979.84x = 4,469.76 × 1,247.52
  4. Step 4: Simplify right side
    2,979.84x = 5,576,115.00
  5. Step 5: Solve for x
    x = 5,576,115.00/2,979.84
  6. Step 6: Final answer
    x = 1,871.28

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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.