Home / 1,278.25-1,908.04-1,096.81

Finding the Fourth Proportional to 1,278.25, 1,908.04 and 1,096.81

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Solution

The fourth proportional to 1,278.25, 1,908.04 and 1,096.81 is: 1,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.25 : 1,908.04 = 1,096.81 : x
  2. Step 2: Convert to fraction form
    1,278.25/1,908.04 = 1,096.81/x
  3. Step 3: Cross multiply
    1,278.25x = 1,908.04 × 1,096.81
  4. Step 4: Simplify right side
    1,278.25x = 2,092,751.90
  5. Step 5: Solve for x
    x = 2,092,751.90/1,278.25
  6. Step 6: Final answer
    x = 1,637.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.