Home / 3,478.96-5,219.22-1,998.86

Finding the Fourth Proportional to 3,478.96, 5,219.22 and 1,998.86

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Solution

The fourth proportional to 3,478.96, 5,219.22 and 1,998.86 is: 2,998.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.96 : 5,219.22 = 1,998.86 : x
  2. Step 2: Convert to fraction form
    3,478.96/5,219.22 = 1,998.86/x
  3. Step 3: Cross multiply
    3,478.96x = 5,219.22 × 1,998.86
  4. Step 4: Simplify right side
    3,478.96x = 10,432,490.09
  5. Step 5: Solve for x
    x = 10,432,490.09/3,478.96
  6. Step 6: Final answer
    x = 2,998.74

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Half scale
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Double scale
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Similar ratio
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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.