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Finding the Fourth Proportional to 6,661.43, 9,990.07 and 2,277.86

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Solution

The fourth proportional to 6,661.43, 9,990.07 and 2,277.86 is: 3,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.43 : 9,990.07 = 2,277.86 : x
  2. Step 2: Convert to fraction form
    6,661.43/9,990.07 = 2,277.86/x
  3. Step 3: Cross multiply
    6,661.43x = 9,990.07 × 2,277.86
  4. Step 4: Simplify right side
    6,661.43x = 22,755,980.85
  5. Step 5: Solve for x
    x = 22,755,980.85/6,661.43
  6. Step 6: Final answer
    x = 3,416.08

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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.