Home / 2,261.22-3,120.60-1,266.72

Finding the Fourth Proportional to 2,261.22, 3,120.60 and 1,266.72

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Solution

The fourth proportional to 2,261.22, 3,120.60 and 1,266.72 is: 1,748.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.22 : 3,120.60 = 1,266.72 : x
  2. Step 2: Convert to fraction form
    2,261.22/3,120.60 = 1,266.72/x
  3. Step 3: Cross multiply
    2,261.22x = 3,120.60 × 1,266.72
  4. Step 4: Simplify right side
    2,261.22x = 3,952,926.43
  5. Step 5: Solve for x
    x = 3,952,926.43/2,261.22
  6. Step 6: Final answer
    x = 1,748.14

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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.