Home / 3,167.28-4,748.35-1,319.78

Finding the Fourth Proportional to 3,167.28, 4,748.35 and 1,319.78

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Solution

The fourth proportional to 3,167.28, 4,748.35 and 1,319.78 is: 1,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.28 : 4,748.35 = 1,319.78 : x
  2. Step 2: Convert to fraction form
    3,167.28/4,748.35 = 1,319.78/x
  3. Step 3: Cross multiply
    3,167.28x = 4,748.35 × 1,319.78
  4. Step 4: Simplify right side
    3,167.28x = 6,266,747.02
  5. Step 5: Solve for x
    x = 6,266,747.02/3,167.28
  6. Step 6: Final answer
    x = 1,978.59

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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.