Home / 1,231.68-1,698.06-1,193.46

Finding the Fourth Proportional to 1,231.68, 1,698.06 and 1,193.46

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Solution

The fourth proportional to 1,231.68, 1,698.06 and 1,193.46 is: 1,645.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.68 : 1,698.06 = 1,193.46 : x
  2. Step 2: Convert to fraction form
    1,231.68/1,698.06 = 1,193.46/x
  3. Step 3: Cross multiply
    1,231.68x = 1,698.06 × 1,193.46
  4. Step 4: Simplify right side
    1,231.68x = 2,026,566.69
  5. Step 5: Solve for x
    x = 2,026,566.69/1,231.68
  6. Step 6: Final answer
    x = 1,645.37

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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.