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Finding the Fourth Proportional to 3,333.44, 5,000.21 and 868.31

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Solution

The fourth proportional to 3,333.44, 5,000.21 and 868.31 is: 1,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,333.44 : 5,000.21 = 868.31 : x
  2. Step 2: Convert to fraction form
    3,333.44/5,000.21 = 868.31/x
  3. Step 3: Cross multiply
    3,333.44x = 5,000.21 × 868.31
  4. Step 4: Simplify right side
    3,333.44x = 4,341,732.35
  5. Step 5: Solve for x
    x = 4,341,732.35/3,333.44
  6. Step 6: Final answer
    x = 1,302.48

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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.