Home / 3,087.78-4,261.05-1,761.36

Finding the Fourth Proportional to 3,087.78, 4,261.05 and 1,761.36

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Solution

The fourth proportional to 3,087.78, 4,261.05 and 1,761.36 is: 2,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.78 : 4,261.05 = 1,761.36 : x
  2. Step 2: Convert to fraction form
    3,087.78/4,261.05 = 1,761.36/x
  3. Step 3: Cross multiply
    3,087.78x = 4,261.05 × 1,761.36
  4. Step 4: Simplify right side
    3,087.78x = 7,505,243.03
  5. Step 5: Solve for x
    x = 7,505,243.03/3,087.78
  6. Step 6: Final answer
    x = 2,430.63

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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.