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Finding the Fourth Proportional to 3,239.89, 4,858.92 and 899.33

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Solution

The fourth proportional to 3,239.89, 4,858.92 and 899.33 is: 1,348.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.89 : 4,858.92 = 899.33 : x
  2. Step 2: Convert to fraction form
    3,239.89/4,858.92 = 899.33/x
  3. Step 3: Cross multiply
    3,239.89x = 4,858.92 × 899.33
  4. Step 4: Simplify right side
    3,239.89x = 4,369,748.23
  5. Step 5: Solve for x
    x = 4,369,748.23/3,239.89
  6. Step 6: Final answer
    x = 1,348.73

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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.