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Finding the Fourth Proportional to 2,650.08, 3,974.21 and 775.47

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Solution

The fourth proportional to 2,650.08, 3,974.21 and 775.47 is: 1,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.08 : 3,974.21 = 775.47 : x
  2. Step 2: Convert to fraction form
    2,650.08/3,974.21 = 775.47/x
  3. Step 3: Cross multiply
    2,650.08x = 3,974.21 × 775.47
  4. Step 4: Simplify right side
    2,650.08x = 3,081,880.63
  5. Step 5: Solve for x
    x = 3,081,880.63/2,650.08
  6. Step 6: Final answer
    x = 1,162.94

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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.