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Finding the Fourth Proportional to 1,683.82, 2,322.79 and 984.79

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Solution

The fourth proportional to 1,683.82, 2,322.79 and 984.79 is: 1,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.82 : 2,322.79 = 984.79 : x
  2. Step 2: Convert to fraction form
    1,683.82/2,322.79 = 984.79/x
  3. Step 3: Cross multiply
    1,683.82x = 2,322.79 × 984.79
  4. Step 4: Simplify right side
    1,683.82x = 2,287,460.36
  5. Step 5: Solve for x
    x = 2,287,460.36/1,683.82
  6. Step 6: Final answer
    x = 1,358.49

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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.