Home / 2,261.39-3,120.77-1,266.64

Finding the Fourth Proportional to 2,261.39, 3,120.77 and 1,266.64

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Solution

The fourth proportional to 2,261.39, 3,120.77 and 1,266.64 is: 1,747.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.39 : 3,120.77 = 1,266.64 : x
  2. Step 2: Convert to fraction form
    2,261.39/3,120.77 = 1,266.64/x
  3. Step 3: Cross multiply
    2,261.39x = 3,120.77 × 1,266.64
  4. Step 4: Simplify right side
    2,261.39x = 3,952,892.11
  5. Step 5: Solve for x
    x = 3,952,892.11/2,261.39
  6. Step 6: Final answer
    x = 1,747.99

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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.