Home / 1,261.16-1,881.97-1,251.56

Finding the Fourth Proportional to 1,261.16, 1,881.97 and 1,251.56

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Solution

The fourth proportional to 1,261.16, 1,881.97 and 1,251.56 is: 1,867.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.16 : 1,881.97 = 1,251.56 : x
  2. Step 2: Convert to fraction form
    1,261.16/1,881.97 = 1,251.56/x
  3. Step 3: Cross multiply
    1,261.16x = 1,881.97 × 1,251.56
  4. Step 4: Simplify right side
    1,261.16x = 2,355,398.37
  5. Step 5: Solve for x
    x = 2,355,398.37/1,261.16
  6. Step 6: Final answer
    x = 1,867.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.