Home / 3,511.29-5,266.71-1,319.85

Finding the Fourth Proportional to 3,511.29, 5,266.71 and 1,319.85

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Solution

The fourth proportional to 3,511.29, 5,266.71 and 1,319.85 is: 1,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.29 : 5,266.71 = 1,319.85 : x
  2. Step 2: Convert to fraction form
    3,511.29/5,266.71 = 1,319.85/x
  3. Step 3: Cross multiply
    3,511.29x = 5,266.71 × 1,319.85
  4. Step 4: Simplify right side
    3,511.29x = 6,951,267.19
  5. Step 5: Solve for x
    x = 6,951,267.19/3,511.29
  6. Step 6: Final answer
    x = 1,979.69

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1.5x scale

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.