Home / 5,101.71-7,039.89-2,863.68

Finding the Fourth Proportional to 5,101.71, 7,039.89 and 2,863.68

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Solution

The fourth proportional to 5,101.71, 7,039.89 and 2,863.68 is: 3,951.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.71 : 7,039.89 = 2,863.68 : x
  2. Step 2: Convert to fraction form
    5,101.71/7,039.89 = 2,863.68/x
  3. Step 3: Cross multiply
    5,101.71x = 7,039.89 × 2,863.68
  4. Step 4: Simplify right side
    5,101.71x = 20,159,992.20
  5. Step 5: Solve for x
    x = 20,159,992.20/5,101.71
  6. Step 6: Final answer
    x = 3,951.61

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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.