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Finding the Fourth Proportional to 2,241.51, 3,362.27 and 780.31

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Solution

The fourth proportional to 2,241.51, 3,362.27 and 780.31 is: 1,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.51 : 3,362.27 = 780.31 : x
  2. Step 2: Convert to fraction form
    2,241.51/3,362.27 = 780.31/x
  3. Step 3: Cross multiply
    2,241.51x = 3,362.27 × 780.31
  4. Step 4: Simplify right side
    2,241.51x = 2,623,612.90
  5. Step 5: Solve for x
    x = 2,623,612.90/2,241.51
  6. Step 6: Final answer
    x = 1,170.47

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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.