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Finding the Fourth Proportional to 9,387.78, 14,081.67 and 2,813.82

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Solution

The fourth proportional to 9,387.78, 14,081.67 and 2,813.82 is: 4,220.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.78 : 14,081.67 = 2,813.82 : x
  2. Step 2: Convert to fraction form
    9,387.78/14,081.67 = 2,813.82/x
  3. Step 3: Cross multiply
    9,387.78x = 14,081.67 × 2,813.82
  4. Step 4: Simplify right side
    9,387.78x = 39,623,284.68
  5. Step 5: Solve for x
    x = 39,623,284.68/9,387.78
  6. Step 6: Final answer
    x = 4,220.73

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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.