Home / 3,109.16-4,665.35-1,377.38

Finding the Fourth Proportional to 3,109.16, 4,665.35 and 1,377.38

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Solution

The fourth proportional to 3,109.16, 4,665.35 and 1,377.38 is: 2,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.16 : 4,665.35 = 1,377.38 : x
  2. Step 2: Convert to fraction form
    3,109.16/4,665.35 = 1,377.38/x
  3. Step 3: Cross multiply
    3,109.16x = 4,665.35 × 1,377.38
  4. Step 4: Simplify right side
    3,109.16x = 6,425,939.90
  5. Step 5: Solve for x
    x = 6,425,939.90/3,109.16
  6. Step 6: Final answer
    x = 2,066.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.