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Finding the Fourth Proportional to 7,805.49, 11,707.11 and 2,540.99

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Solution

The fourth proportional to 7,805.49, 11,707.11 and 2,540.99 is: 3,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.49 : 11,707.11 = 2,540.99 : x
  2. Step 2: Convert to fraction form
    7,805.49/11,707.11 = 2,540.99/x
  3. Step 3: Cross multiply
    7,805.49x = 11,707.11 × 2,540.99
  4. Step 4: Simplify right side
    7,805.49x = 29,747,590.90
  5. Step 5: Solve for x
    x = 29,747,590.90/7,805.49
  6. Step 6: Final answer
    x = 3,811.11

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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.