Home / 3,291.40-4,542.48-1,965.84

Finding the Fourth Proportional to 3,291.40, 4,542.48 and 1,965.84

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Solution

The fourth proportional to 3,291.40, 4,542.48 and 1,965.84 is: 2,713.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.40 : 4,542.48 = 1,965.84 : x
  2. Step 2: Convert to fraction form
    3,291.40/4,542.48 = 1,965.84/x
  3. Step 3: Cross multiply
    3,291.40x = 4,542.48 × 1,965.84
  4. Step 4: Simplify right side
    3,291.40x = 8,929,771.85
  5. Step 5: Solve for x
    x = 8,929,771.85/3,291.40
  6. Step 6: Final answer
    x = 2,713.06

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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.