Home / 1,792.14-2,688.54-1,272.30

Finding the Fourth Proportional to 1,792.14, 2,688.54 and 1,272.30

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Solution

The fourth proportional to 1,792.14, 2,688.54 and 1,272.30 is: 1,908.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.14 : 2,688.54 = 1,272.30 : x
  2. Step 2: Convert to fraction form
    1,792.14/2,688.54 = 1,272.30/x
  3. Step 3: Cross multiply
    1,792.14x = 2,688.54 × 1,272.30
  4. Step 4: Simplify right side
    1,792.14x = 3,420,629.44
  5. Step 5: Solve for x
    x = 3,420,629.44/1,792.14
  6. Step 6: Final answer
    x = 1,908.68

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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.