Home / 1,261.17-1,883.43-1,077.09

Finding the Fourth Proportional to 1,261.17, 1,883.43 and 1,077.09

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Solution

The fourth proportional to 1,261.17, 1,883.43 and 1,077.09 is: 1,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.17 : 1,883.43 = 1,077.09 : x
  2. Step 2: Convert to fraction form
    1,261.17/1,883.43 = 1,077.09/x
  3. Step 3: Cross multiply
    1,261.17x = 1,883.43 × 1,077.09
  4. Step 4: Simplify right side
    1,261.17x = 2,028,623.62
  5. Step 5: Solve for x
    x = 2,028,623.62/1,261.17
  6. Step 6: Final answer
    x = 1,608.53

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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.