Home / 3,120.42-4,306.14-1,723.18

Finding the Fourth Proportional to 3,120.42, 4,306.14 and 1,723.18

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Solution

The fourth proportional to 3,120.42, 4,306.14 and 1,723.18 is: 2,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.42 : 4,306.14 = 1,723.18 : x
  2. Step 2: Convert to fraction form
    3,120.42/4,306.14 = 1,723.18/x
  3. Step 3: Cross multiply
    3,120.42x = 4,306.14 × 1,723.18
  4. Step 4: Simplify right side
    3,120.42x = 7,420,254.33
  5. Step 5: Solve for x
    x = 7,420,254.33/3,120.42
  6. Step 6: Final answer
    x = 2,377.97

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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.