Home / 3,919.48-5,407.92-2,240.38

Finding the Fourth Proportional to 3,919.48, 5,407.92 and 2,240.38

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Solution

The fourth proportional to 3,919.48, 5,407.92 and 2,240.38 is: 3,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.48 : 5,407.92 = 2,240.38 : x
  2. Step 2: Convert to fraction form
    3,919.48/5,407.92 = 2,240.38/x
  3. Step 3: Cross multiply
    3,919.48x = 5,407.92 × 2,240.38
  4. Step 4: Simplify right side
    3,919.48x = 12,115,795.81
  5. Step 5: Solve for x
    x = 12,115,795.81/3,919.48
  6. Step 6: Final answer
    x = 3,091.17

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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.