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Finding the Fourth Proportional to 7,755.76, 11,633.40 and 2,209.48

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Solution

The fourth proportional to 7,755.76, 11,633.40 and 2,209.48 is: 3,314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.76 : 11,633.40 = 2,209.48 : x
  2. Step 2: Convert to fraction form
    7,755.76/11,633.40 = 2,209.48/x
  3. Step 3: Cross multiply
    7,755.76x = 11,633.40 × 2,209.48
  4. Step 4: Simplify right side
    7,755.76x = 25,703,764.63
  5. Step 5: Solve for x
    x = 25,703,764.63/7,755.76
  6. Step 6: Final answer
    x = 3,314.15

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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.