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Finding the Fourth Proportional to 5,939.40, 8,902.84 and 1,989.64

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Solution

The fourth proportional to 5,939.40, 8,902.84 and 1,989.64 is: 2,982.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.40 : 8,902.84 = 1,989.64 : x
  2. Step 2: Convert to fraction form
    5,939.40/8,902.84 = 1,989.64/x
  3. Step 3: Cross multiply
    5,939.40x = 8,902.84 × 1,989.64
  4. Step 4: Simplify right side
    5,939.40x = 17,713,446.58
  5. Step 5: Solve for x
    x = 17,713,446.58/5,939.40
  6. Step 6: Final answer
    x = 2,982.36

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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.