Home / 3,120.36-4,306.32-1,723.08

Finding the Fourth Proportional to 3,120.36, 4,306.32 and 1,723.08

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Solution

The fourth proportional to 3,120.36, 4,306.32 and 1,723.08 is: 2,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.36 : 4,306.32 = 1,723.08 : x
  2. Step 2: Convert to fraction form
    3,120.36/4,306.32 = 1,723.08/x
  3. Step 3: Cross multiply
    3,120.36x = 4,306.32 × 1,723.08
  4. Step 4: Simplify right side
    3,120.36x = 7,420,133.87
  5. Step 5: Solve for x
    x = 7,420,133.87/3,120.36
  6. Step 6: Final answer
    x = 2,377.97

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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.