Home / 3,241.28-4,859.40-1,390.88

Finding the Fourth Proportional to 3,241.28, 4,859.40 and 1,390.88

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Solution

The fourth proportional to 3,241.28, 4,859.40 and 1,390.88 is: 2,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,241.28 : 4,859.40 = 1,390.88 : x
  2. Step 2: Convert to fraction form
    3,241.28/4,859.40 = 1,390.88/x
  3. Step 3: Cross multiply
    3,241.28x = 4,859.40 × 1,390.88
  4. Step 4: Simplify right side
    3,241.28x = 6,758,842.27
  5. Step 5: Solve for x
    x = 6,758,842.27/3,241.28
  6. Step 6: Final answer
    x = 2,085.24

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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.