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Finding the Fourth Proportional to 2,622.66, 3,934.67 and 979.22

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Solution

The fourth proportional to 2,622.66, 3,934.67 and 979.22 is: 1,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.66 : 3,934.67 = 979.22 : x
  2. Step 2: Convert to fraction form
    2,622.66/3,934.67 = 979.22/x
  3. Step 3: Cross multiply
    2,622.66x = 3,934.67 × 979.22
  4. Step 4: Simplify right side
    2,622.66x = 3,852,907.56
  5. Step 5: Solve for x
    x = 3,852,907.56/2,622.66
  6. Step 6: Final answer
    x = 1,469.08

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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.