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Finding the Fourth Proportional to 3,189.43, 4,782.35 and 997.57

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Solution

The fourth proportional to 3,189.43, 4,782.35 and 997.57 is: 1,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.43 : 4,782.35 = 997.57 : x
  2. Step 2: Convert to fraction form
    3,189.43/4,782.35 = 997.57/x
  3. Step 3: Cross multiply
    3,189.43x = 4,782.35 × 997.57
  4. Step 4: Simplify right side
    3,189.43x = 4,770,723.90
  5. Step 5: Solve for x
    x = 4,770,723.90/3,189.43
  6. Step 6: Final answer
    x = 1,495.79

Related Problems

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Double scale
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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.