Home / 1,929.04-2,891.22-1,107.88

Finding the Fourth Proportional to 1,929.04, 2,891.22 and 1,107.88

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Solution

The fourth proportional to 1,929.04, 2,891.22 and 1,107.88 is: 1,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.04 : 2,891.22 = 1,107.88 : x
  2. Step 2: Convert to fraction form
    1,929.04/2,891.22 = 1,107.88/x
  3. Step 3: Cross multiply
    1,929.04x = 2,891.22 × 1,107.88
  4. Step 4: Simplify right side
    1,929.04x = 3,203,124.81
  5. Step 5: Solve for x
    x = 3,203,124.81/1,929.04
  6. Step 6: Final answer
    x = 1,660.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.