Home / 2,241.14-3,360.65-780.11

Finding the Fourth Proportional to 2,241.14, 3,360.65 and 780.11

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Solution

The fourth proportional to 2,241.14, 3,360.65 and 780.11 is: 1,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.14 : 3,360.65 = 780.11 : x
  2. Step 2: Convert to fraction form
    2,241.14/3,360.65 = 780.11/x
  3. Step 3: Cross multiply
    2,241.14x = 3,360.65 × 780.11
  4. Step 4: Simplify right side
    2,241.14x = 2,621,676.67
  5. Step 5: Solve for x
    x = 2,621,676.67/2,241.14
  6. Step 6: Final answer
    x = 1,169.80

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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.