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Finding the Fourth Proportional to 2,226.74, 3,339.24 and 765.50

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Solution

The fourth proportional to 2,226.74, 3,339.24 and 765.50 is: 1,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.74 : 3,339.24 = 765.50 : x
  2. Step 2: Convert to fraction form
    2,226.74/3,339.24 = 765.50/x
  3. Step 3: Cross multiply
    2,226.74x = 3,339.24 × 765.50
  4. Step 4: Simplify right side
    2,226.74x = 2,556,188.22
  5. Step 5: Solve for x
    x = 2,556,188.22/2,226.74
  6. Step 6: Final answer
    x = 1,147.95

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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.