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Finding the Fourth Proportional to 6,661.64, 9,991.86 and 2,278.83

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Solution

The fourth proportional to 6,661.64, 9,991.86 and 2,278.83 is: 3,418.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.64 : 9,991.86 = 2,278.83 : x
  2. Step 2: Convert to fraction form
    6,661.64/9,991.86 = 2,278.83/x
  3. Step 3: Cross multiply
    6,661.64x = 9,991.86 × 2,278.83
  4. Step 4: Simplify right side
    6,661.64x = 22,769,779.25
  5. Step 5: Solve for x
    x = 22,769,779.25/6,661.64
  6. Step 6: Final answer
    x = 3,418.04

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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.