Home / 1,694.48-2,334.30-1,320.80

Finding the Fourth Proportional to 1,694.48, 2,334.30 and 1,320.80

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Solution

The fourth proportional to 1,694.48, 2,334.30 and 1,320.80 is: 1,819.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694.48 : 2,334.30 = 1,320.80 : x
  2. Step 2: Convert to fraction form
    1,694.48/2,334.30 = 1,320.80/x
  3. Step 3: Cross multiply
    1,694.48x = 2,334.30 × 1,320.80
  4. Step 4: Simplify right side
    1,694.48x = 3,083,143.44
  5. Step 5: Solve for x
    x = 3,083,143.44/1,694.48
  6. Step 6: Final answer
    x = 1,819.52

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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.