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Finding the Fourth Proportional to 1,839.66, 2,760.39 and 744.81

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Solution

The fourth proportional to 1,839.66, 2,760.39 and 744.81 is: 1,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.66 : 2,760.39 = 744.81 : x
  2. Step 2: Convert to fraction form
    1,839.66/2,760.39 = 744.81/x
  3. Step 3: Cross multiply
    1,839.66x = 2,760.39 × 744.81
  4. Step 4: Simplify right side
    1,839.66x = 2,055,966.08
  5. Step 5: Solve for x
    x = 2,055,966.08/1,839.66
  6. Step 6: Final answer
    x = 1,117.58

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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.