Home / 1,980.12-2,732.49-1,095.91

Finding the Fourth Proportional to 1,980.12, 2,732.49 and 1,095.91

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Solution

The fourth proportional to 1,980.12, 2,732.49 and 1,095.91 is: 1,512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.12 : 2,732.49 = 1,095.91 : x
  2. Step 2: Convert to fraction form
    1,980.12/2,732.49 = 1,095.91/x
  3. Step 3: Cross multiply
    1,980.12x = 2,732.49 × 1,095.91
  4. Step 4: Simplify right side
    1,980.12x = 2,994,556.28
  5. Step 5: Solve for x
    x = 2,994,556.28/1,980.12
  6. Step 6: Final answer
    x = 1,512.31

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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.