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Finding the Fourth Proportional to 2,589.80, 3,885.27 and 946.34

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Solution

The fourth proportional to 2,589.80, 3,885.27 and 946.34 is: 1,419.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.80 : 3,885.27 = 946.34 : x
  2. Step 2: Convert to fraction form
    2,589.80/3,885.27 = 946.34/x
  3. Step 3: Cross multiply
    2,589.80x = 3,885.27 × 946.34
  4. Step 4: Simplify right side
    2,589.80x = 3,676,781.68
  5. Step 5: Solve for x
    x = 3,676,781.68/2,589.80
  6. Step 6: Final answer
    x = 1,419.72

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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.