Home / 1,980.92-2,733.36-1,141.66

Finding the Fourth Proportional to 1,980.92, 2,733.36 and 1,141.66

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Solution

The fourth proportional to 1,980.92, 2,733.36 and 1,141.66 is: 1,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.92 : 2,733.36 = 1,141.66 : x
  2. Step 2: Convert to fraction form
    1,980.92/2,733.36 = 1,141.66/x
  3. Step 3: Cross multiply
    1,980.92x = 2,733.36 × 1,141.66
  4. Step 4: Simplify right side
    1,980.92x = 3,120,567.78
  5. Step 5: Solve for x
    x = 3,120,567.78/1,980.92
  6. Step 6: Final answer
    x = 1,575.31

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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.