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Finding the Fourth Proportional to 3,354.32, 5,031.89 and 889.19

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Solution

The fourth proportional to 3,354.32, 5,031.89 and 889.19 is: 1,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.32 : 5,031.89 = 889.19 : x
  2. Step 2: Convert to fraction form
    3,354.32/5,031.89 = 889.19/x
  3. Step 3: Cross multiply
    3,354.32x = 5,031.89 × 889.19
  4. Step 4: Simplify right side
    3,354.32x = 4,474,306.27
  5. Step 5: Solve for x
    x = 4,474,306.27/3,354.32
  6. Step 6: Final answer
    x = 1,333.89

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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.