Home / 2,177.39-3,003.69-1,379.39

Finding the Fourth Proportional to 2,177.39, 3,003.69 and 1,379.39

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Solution

The fourth proportional to 2,177.39, 3,003.69 and 1,379.39 is: 1,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.39 : 3,003.69 = 1,379.39 : x
  2. Step 2: Convert to fraction form
    2,177.39/3,003.69 = 1,379.39/x
  3. Step 3: Cross multiply
    2,177.39x = 3,003.69 × 1,379.39
  4. Step 4: Simplify right side
    2,177.39x = 4,143,244.93
  5. Step 5: Solve for x
    x = 4,143,244.93/2,177.39
  6. Step 6: Final answer
    x = 1,902.85

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Half 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.