Home / 2,961.36-4,086.72-1,719.36

Finding the Fourth Proportional to 2,961.36, 4,086.72 and 1,719.36

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Solution

The fourth proportional to 2,961.36, 4,086.72 and 1,719.36 is: 2,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.36 : 4,086.72 = 1,719.36 : x
  2. Step 2: Convert to fraction form
    2,961.36/4,086.72 = 1,719.36/x
  3. Step 3: Cross multiply
    2,961.36x = 4,086.72 × 1,719.36
  4. Step 4: Simplify right side
    2,961.36x = 7,026,542.90
  5. Step 5: Solve for x
    x = 7,026,542.90/2,961.36
  6. Step 6: Final answer
    x = 2,372.74

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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.