Home / 5,005.43-6,905.75-3,115.91

Finding the Fourth Proportional to 5,005.43, 6,905.75 and 3,115.91

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Solution

The fourth proportional to 5,005.43, 6,905.75 and 3,115.91 is: 4,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,005.43 : 6,905.75 = 3,115.91 : x
  2. Step 2: Convert to fraction form
    5,005.43/6,905.75 = 3,115.91/x
  3. Step 3: Cross multiply
    5,005.43x = 6,905.75 × 3,115.91
  4. Step 4: Simplify right side
    5,005.43x = 21,517,645.37
  5. Step 5: Solve for x
    x = 21,517,645.37/5,005.43
  6. Step 6: Final answer
    x = 4,298.86

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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.