Home / 2,261.64-3,120.79-1,266.69

Finding the Fourth Proportional to 2,261.64, 3,120.79 and 1,266.69

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Solution

The fourth proportional to 2,261.64, 3,120.79 and 1,266.69 is: 1,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.64 : 3,120.79 = 1,266.69 : x
  2. Step 2: Convert to fraction form
    2,261.64/3,120.79 = 1,266.69/x
  3. Step 3: Cross multiply
    2,261.64x = 3,120.79 × 1,266.69
  4. Step 4: Simplify right side
    2,261.64x = 3,953,073.49
  5. Step 5: Solve for x
    x = 3,953,073.49/2,261.64
  6. Step 6: Final answer
    x = 1,747.88

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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.