Home / 5,705.70-7,873.77-3,187.86

Finding the Fourth Proportional to 5,705.70, 7,873.77 and 3,187.86

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Solution

The fourth proportional to 5,705.70, 7,873.77 and 3,187.86 is: 4,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.70 : 7,873.77 = 3,187.86 : x
  2. Step 2: Convert to fraction form
    5,705.70/7,873.77 = 3,187.86/x
  3. Step 3: Cross multiply
    5,705.70x = 7,873.77 × 3,187.86
  4. Step 4: Simplify right side
    5,705.70x = 25,100,476.43
  5. Step 5: Solve for x
    x = 25,100,476.43/5,705.70
  6. Step 6: Final answer
    x = 4,399.19

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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.