Home / 5,101.31-7,039.79-2,863.40

Finding the Fourth Proportional to 5,101.31, 7,039.79 and 2,863.40

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Solution

The fourth proportional to 5,101.31, 7,039.79 and 2,863.40 is: 3,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.31 : 7,039.79 = 2,863.40 : x
  2. Step 2: Convert to fraction form
    5,101.31/7,039.79 = 2,863.40/x
  3. Step 3: Cross multiply
    5,101.31x = 7,039.79 × 2,863.40
  4. Step 4: Simplify right side
    5,101.31x = 20,157,751.61
  5. Step 5: Solve for x
    x = 20,157,751.61/5,101.31
  6. Step 6: Final answer
    x = 3,951.48

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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.