Home / 3,129.33-4,318.54-1,934.49

Finding the Fourth Proportional to 3,129.33, 4,318.54 and 1,934.49

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Solution

The fourth proportional to 3,129.33, 4,318.54 and 1,934.49 is: 2,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.33 : 4,318.54 = 1,934.49 : x
  2. Step 2: Convert to fraction form
    3,129.33/4,318.54 = 1,934.49/x
  3. Step 3: Cross multiply
    3,129.33x = 4,318.54 × 1,934.49
  4. Step 4: Simplify right side
    3,129.33x = 8,354,167.61
  5. Step 5: Solve for x
    x = 8,354,167.61/3,129.33
  6. Step 6: Final answer
    x = 2,669.63

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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.