Home / 2,261.79-3,120.75-1,377

Finding the Fourth Proportional to 2,261.79, 3,120.75 and 1,377

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Solution

The fourth proportional to 2,261.79, 3,120.75 and 1,377 is: 1,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.79 : 3,120.75 = 1,377 : x
  2. Step 2: Convert to fraction form
    2,261.79/3,120.75 = 1,377/x
  3. Step 3: Cross multiply
    2,261.79x = 3,120.75 × 1,377
  4. Step 4: Simplify right side
    2,261.79x = 4,297,272.75
  5. Step 5: Solve for x
    x = 4,297,272.75/2,261.79
  6. Step 6: Final answer
    x = 1,899.94

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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.