Home / 3,291.50-4,934.82-1,992.68

Finding the Fourth Proportional to 3,291.50, 4,934.82 and 1,992.68

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Solution

The fourth proportional to 3,291.50, 4,934.82 and 1,992.68 is: 2,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.50 : 4,934.82 = 1,992.68 : x
  2. Step 2: Convert to fraction form
    3,291.50/4,934.82 = 1,992.68/x
  3. Step 3: Cross multiply
    3,291.50x = 4,934.82 × 1,992.68
  4. Step 4: Simplify right side
    3,291.50x = 9,833,517.12
  5. Step 5: Solve for x
    x = 9,833,517.12/3,291.50
  6. Step 6: Final answer
    x = 2,987.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.