Home / 2,170.38-2,995.15-1,319.39

Finding the Fourth Proportional to 2,170.38, 2,995.15 and 1,319.39

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Solution

The fourth proportional to 2,170.38, 2,995.15 and 1,319.39 is: 1,820.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.38 : 2,995.15 = 1,319.39 : x
  2. Step 2: Convert to fraction form
    2,170.38/2,995.15 = 1,319.39/x
  3. Step 3: Cross multiply
    2,170.38x = 2,995.15 × 1,319.39
  4. Step 4: Simplify right side
    2,170.38x = 3,951,770.96
  5. Step 5: Solve for x
    x = 3,951,770.96/2,170.38
  6. Step 6: Final answer
    x = 1,820.77

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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.