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Finding the Fourth Proportional to 2,265.97, 3,398.07 and 913.15

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Solution

The fourth proportional to 2,265.97, 3,398.07 and 913.15 is: 1,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.97 : 3,398.07 = 913.15 : x
  2. Step 2: Convert to fraction form
    2,265.97/3,398.07 = 913.15/x
  3. Step 3: Cross multiply
    2,265.97x = 3,398.07 × 913.15
  4. Step 4: Simplify right side
    2,265.97x = 3,102,947.62
  5. Step 5: Solve for x
    x = 3,102,947.62/2,265.97
  6. Step 6: Final answer
    x = 1,369.37

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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.