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Finding the Fourth Proportional to 1,589.39, 2,193.49 and 926.29

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Solution

The fourth proportional to 1,589.39, 2,193.49 and 926.29 is: 1,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.39 : 2,193.49 = 926.29 : x
  2. Step 2: Convert to fraction form
    1,589.39/2,193.49 = 926.29/x
  3. Step 3: Cross multiply
    1,589.39x = 2,193.49 × 926.29
  4. Step 4: Simplify right side
    1,589.39x = 2,031,800.72
  5. Step 5: Solve for x
    x = 2,031,800.72/1,589.39
  6. Step 6: Final answer
    x = 1,278.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.