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Finding the Fourth Proportional to 2,311.49, 3,467.75 and 751.66

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Solution

The fourth proportional to 2,311.49, 3,467.75 and 751.66 is: 1,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.49 : 3,467.75 = 751.66 : x
  2. Step 2: Convert to fraction form
    2,311.49/3,467.75 = 751.66/x
  3. Step 3: Cross multiply
    2,311.49x = 3,467.75 × 751.66
  4. Step 4: Simplify right side
    2,311.49x = 2,606,556.54
  5. Step 5: Solve for x
    x = 2,606,556.54/2,311.49
  6. Step 6: Final answer
    x = 1,127.65

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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.