Home / 2,790.92-3,850.34-1,950.12

Finding the Fourth Proportional to 2,790.92, 3,850.34 and 1,950.12

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Solution

The fourth proportional to 2,790.92, 3,850.34 and 1,950.12 is: 2,690.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.92 : 3,850.34 = 1,950.12 : x
  2. Step 2: Convert to fraction form
    2,790.92/3,850.34 = 1,950.12/x
  3. Step 3: Cross multiply
    2,790.92x = 3,850.34 × 1,950.12
  4. Step 4: Simplify right side
    2,790.92x = 7,508,625.04
  5. Step 5: Solve for x
    x = 7,508,625.04/2,790.92
  6. Step 6: Final answer
    x = 2,690.38

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.