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Finding the Fourth Proportional to 1,929.67, 2,662.26 and 1,266.88

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Solution

The fourth proportional to 1,929.67, 2,662.26 and 1,266.88 is: 1,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.67 : 2,662.26 = 1,266.88 : x
  2. Step 2: Convert to fraction form
    1,929.67/2,662.26 = 1,266.88/x
  3. Step 3: Cross multiply
    1,929.67x = 2,662.26 × 1,266.88
  4. Step 4: Simplify right side
    1,929.67x = 3,372,763.95
  5. Step 5: Solve for x
    x = 3,372,763.95/1,929.67
  6. Step 6: Final answer
    x = 1,747.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.