Home / 1,961.13-2,706.36-1,076.91

Finding the Fourth Proportional to 1,961.13, 2,706.36 and 1,076.91

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Solution

The fourth proportional to 1,961.13, 2,706.36 and 1,076.91 is: 1,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.13 : 2,706.36 = 1,076.91 : x
  2. Step 2: Convert to fraction form
    1,961.13/2,706.36 = 1,076.91/x
  3. Step 3: Cross multiply
    1,961.13x = 2,706.36 × 1,076.91
  4. Step 4: Simplify right side
    1,961.13x = 2,914,506.15
  5. Step 5: Solve for x
    x = 2,914,506.15/1,961.13
  6. Step 6: Final answer
    x = 1,486.14

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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.