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Finding the Fourth Proportional to 6,990.88, 10,486.41 and 2,775.17

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Solution

The fourth proportional to 6,990.88, 10,486.41 and 2,775.17 is: 4,162.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.88 : 10,486.41 = 2,775.17 : x
  2. Step 2: Convert to fraction form
    6,990.88/10,486.41 = 2,775.17/x
  3. Step 3: Cross multiply
    6,990.88x = 10,486.41 × 2,775.17
  4. Step 4: Simplify right side
    6,990.88x = 29,101,570.44
  5. Step 5: Solve for x
    x = 29,101,570.44/6,990.88
  6. Step 6: Final answer
    x = 4,162.79

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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.