Home / 2,261.45-3,120.86-1,266.71

Finding the Fourth Proportional to 2,261.45, 3,120.86 and 1,266.71

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Solution

The fourth proportional to 2,261.45, 3,120.86 and 1,266.71 is: 1,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.45 : 3,120.86 = 1,266.71 : x
  2. Step 2: Convert to fraction form
    2,261.45/3,120.86 = 1,266.71/x
  3. Step 3: Cross multiply
    2,261.45x = 3,120.86 × 1,266.71
  4. Step 4: Simplify right side
    2,261.45x = 3,953,208.97
  5. Step 5: Solve for x
    x = 3,953,208.97/2,261.45
  6. Step 6: Final answer
    x = 1,748.09

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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.