Home / 3,112.18-4,294.30-1,934.86

Finding the Fourth Proportional to 3,112.18, 4,294.30 and 1,934.86

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Solution

The fourth proportional to 3,112.18, 4,294.30 and 1,934.86 is: 2,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.18 : 4,294.30 = 1,934.86 : x
  2. Step 2: Convert to fraction form
    3,112.18/4,294.30 = 1,934.86/x
  3. Step 3: Cross multiply
    3,112.18x = 4,294.30 × 1,934.86
  4. Step 4: Simplify right side
    3,112.18x = 8,308,869.30
  5. Step 5: Solve for x
    x = 8,308,869.30/3,112.18
  6. Step 6: Final answer
    x = 2,669.79

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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.