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Finding the Fourth Proportional to 6,767.88, 9,315.18 and 5,910.90

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Solution

The fourth proportional to 6,767.88, 9,315.18 and 5,910.90 is: 8,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,767.88 : 9,315.18 = 5,910.90 : x
  2. Step 2: Convert to fraction form
    6,767.88/9,315.18 = 5,910.90/x
  3. Step 3: Cross multiply
    6,767.88x = 9,315.18 × 5,910.90
  4. Step 4: Simplify right side
    6,767.88x = 55,061,097.46
  5. Step 5: Solve for x
    x = 55,061,097.46/6,767.88
  6. Step 6: Final answer
    x = 8,135.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.