Home / 2,084.38-3,126.57-1,319.74

Finding the Fourth Proportional to 2,084.38, 3,126.57 and 1,319.74

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Solution

The fourth proportional to 2,084.38, 3,126.57 and 1,319.74 is: 1,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.38 : 3,126.57 = 1,319.74 : x
  2. Step 2: Convert to fraction form
    2,084.38/3,126.57 = 1,319.74/x
  3. Step 3: Cross multiply
    2,084.38x = 3,126.57 × 1,319.74
  4. Step 4: Simplify right side
    2,084.38x = 4,126,259.49
  5. Step 5: Solve for x
    x = 4,126,259.49/2,084.38
  6. Step 6: Final answer
    x = 1,979.61

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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.