Home / 1,209.49-1,668.87-1,022.58

Finding the Fourth Proportional to 1,209.49, 1,668.87 and 1,022.58

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Solution

The fourth proportional to 1,209.49, 1,668.87 and 1,022.58 is: 1,410.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.49 : 1,668.87 = 1,022.58 : x
  2. Step 2: Convert to fraction form
    1,209.49/1,668.87 = 1,022.58/x
  3. Step 3: Cross multiply
    1,209.49x = 1,668.87 × 1,022.58
  4. Step 4: Simplify right side
    1,209.49x = 1,706,553.08
  5. Step 5: Solve for x
    x = 1,706,553.08/1,209.49
  6. Step 6: Final answer
    x = 1,410.97

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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.