Home / 1,208.52-1,668.60-1,042.07

Finding the Fourth Proportional to 1,208.52, 1,668.60 and 1,042.07

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Solution

The fourth proportional to 1,208.52, 1,668.60 and 1,042.07 is: 1,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.52 : 1,668.60 = 1,042.07 : x
  2. Step 2: Convert to fraction form
    1,208.52/1,668.60 = 1,042.07/x
  3. Step 3: Cross multiply
    1,208.52x = 1,668.60 × 1,042.07
  4. Step 4: Simplify right side
    1,208.52x = 1,738,789.66
  5. Step 5: Solve for x
    x = 1,738,789.66/1,208.52
  6. Step 6: Final answer
    x = 1,438.78

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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.