Home / 5,139.08-7,091.94-2,781.22

Finding the Fourth Proportional to 5,139.08, 7,091.94 and 2,781.22

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Solution

The fourth proportional to 5,139.08, 7,091.94 and 2,781.22 is: 3,838.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.08 : 7,091.94 = 2,781.22 : x
  2. Step 2: Convert to fraction form
    5,139.08/7,091.94 = 2,781.22/x
  3. Step 3: Cross multiply
    5,139.08x = 7,091.94 × 2,781.22
  4. Step 4: Simplify right side
    5,139.08x = 19,724,258.06
  5. Step 5: Solve for x
    x = 19,724,258.06/5,139.08
  6. Step 6: Final answer
    x = 3,838.09

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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.