Home / 9,861.78-14,789.43-3,286.20

Finding the Fourth Proportional to 9,861.78, 14,789.43 and 3,286.20

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Solution

The fourth proportional to 9,861.78, 14,789.43 and 3,286.20 is: 4,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.78 : 14,789.43 = 3,286.20 : x
  2. Step 2: Convert to fraction form
    9,861.78/14,789.43 = 3,286.20/x
  3. Step 3: Cross multiply
    9,861.78x = 14,789.43 × 3,286.20
  4. Step 4: Simplify right side
    9,861.78x = 48,601,024.87
  5. Step 5: Solve for x
    x = 48,601,024.87/9,861.78
  6. Step 6: Final answer
    x = 4,928.22

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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.