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Finding the Fourth Proportional to 2,624.26, 3,932.88 and 979.24

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Solution

The fourth proportional to 2,624.26, 3,932.88 and 979.24 is: 1,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624.26 : 3,932.88 = 979.24 : x
  2. Step 2: Convert to fraction form
    2,624.26/3,932.88 = 979.24/x
  3. Step 3: Cross multiply
    2,624.26x = 3,932.88 × 979.24
  4. Step 4: Simplify right side
    2,624.26x = 3,851,233.41
  5. Step 5: Solve for x
    x = 3,851,233.41/2,624.26
  6. Step 6: Final answer
    x = 1,467.55

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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.