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Finding the Fourth Proportional to 2,241.70, 3,362.57 and 780.85

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Solution

The fourth proportional to 2,241.70, 3,362.57 and 780.85 is: 1,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.70 : 3,362.57 = 780.85 : x
  2. Step 2: Convert to fraction form
    2,241.70/3,362.57 = 780.85/x
  3. Step 3: Cross multiply
    2,241.70x = 3,362.57 × 780.85
  4. Step 4: Simplify right side
    2,241.70x = 2,625,666.01
  5. Step 5: Solve for x
    x = 2,625,666.01/2,241.70
  6. Step 6: Final answer
    x = 1,171.28

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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.