Home / 3,129.82-4,318.46-1,853.07

Finding the Fourth Proportional to 3,129.82, 4,318.46 and 1,853.07

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Solution

The fourth proportional to 3,129.82, 4,318.46 and 1,853.07 is: 2,556.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.82 : 4,318.46 = 1,853.07 : x
  2. Step 2: Convert to fraction form
    3,129.82/4,318.46 = 1,853.07/x
  3. Step 3: Cross multiply
    3,129.82x = 4,318.46 × 1,853.07
  4. Step 4: Simplify right side
    3,129.82x = 8,002,396.68
  5. Step 5: Solve for x
    x = 8,002,396.68/3,129.82
  6. Step 6: Final answer
    x = 2,556.82

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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.