Home / 3,511.30-5,266.70-1,319.86

Finding the Fourth Proportional to 3,511.30, 5,266.70 and 1,319.86

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Solution

The fourth proportional to 3,511.30, 5,266.70 and 1,319.86 is: 1,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.30 : 5,266.70 = 1,319.86 : x
  2. Step 2: Convert to fraction form
    3,511.30/5,266.70 = 1,319.86/x
  3. Step 3: Cross multiply
    3,511.30x = 5,266.70 × 1,319.86
  4. Step 4: Simplify right side
    3,511.30x = 6,951,306.66
  5. Step 5: Solve for x
    x = 6,951,306.66/3,511.30
  6. Step 6: Final answer
    x = 1,979.70

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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.