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Finding the Fourth Proportional to 6,662.43, 9,991.57 and 2,278.86

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Solution

The fourth proportional to 6,662.43, 9,991.57 and 2,278.86 is: 3,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.43 : 9,991.57 = 2,278.86 : x
  2. Step 2: Convert to fraction form
    6,662.43/9,991.57 = 2,278.86/x
  3. Step 3: Cross multiply
    6,662.43x = 9,991.57 × 2,278.86
  4. Step 4: Simplify right side
    6,662.43x = 22,769,389.21
  5. Step 5: Solve for x
    x = 22,769,389.21/6,662.43
  6. Step 6: Final answer
    x = 3,417.58

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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.