Home / 3,115.69-4,298.35-1,996.39

Finding the Fourth Proportional to 3,115.69, 4,298.35 and 1,996.39

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Solution

The fourth proportional to 3,115.69, 4,298.35 and 1,996.39 is: 2,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.69 : 4,298.35 = 1,996.39 : x
  2. Step 2: Convert to fraction form
    3,115.69/4,298.35 = 1,996.39/x
  3. Step 3: Cross multiply
    3,115.69x = 4,298.35 × 1,996.39
  4. Step 4: Simplify right side
    3,115.69x = 8,581,182.96
  5. Step 5: Solve for x
    x = 8,581,182.96/3,115.69
  6. Step 6: Final answer
    x = 2,754.18

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.