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Finding the Fourth Proportional to 2,241.86, 3,362.80 and 781.01

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Solution

The fourth proportional to 2,241.86, 3,362.80 and 781.01 is: 1,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.86 : 3,362.80 = 781.01 : x
  2. Step 2: Convert to fraction form
    2,241.86/3,362.80 = 781.01/x
  3. Step 3: Cross multiply
    2,241.86x = 3,362.80 × 781.01
  4. Step 4: Simplify right side
    2,241.86x = 2,626,365.57
  5. Step 5: Solve for x
    x = 2,626,365.57/2,241.86
  6. Step 6: Final answer
    x = 1,171.51

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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.