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Finding the Fourth Proportional to 7,887.97, 11,832.59 and 2,622.79

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Solution

The fourth proportional to 7,887.97, 11,832.59 and 2,622.79 is: 3,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.97 : 11,832.59 = 2,622.79 : x
  2. Step 2: Convert to fraction form
    7,887.97/11,832.59 = 2,622.79/x
  3. Step 3: Cross multiply
    7,887.97x = 11,832.59 × 2,622.79
  4. Step 4: Simplify right side
    7,887.97x = 31,034,398.73
  5. Step 5: Solve for x
    x = 31,034,398.73/7,887.97
  6. Step 6: Final answer
    x = 3,934.40

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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.