Home / 1,691.58-2,334.63-1,221.04

Finding the Fourth Proportional to 1,691.58, 2,334.63 and 1,221.04

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Solution

The fourth proportional to 1,691.58, 2,334.63 and 1,221.04 is: 1,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.58 : 2,334.63 = 1,221.04 : x
  2. Step 2: Convert to fraction form
    1,691.58/2,334.63 = 1,221.04/x
  3. Step 3: Cross multiply
    1,691.58x = 2,334.63 × 1,221.04
  4. Step 4: Simplify right side
    1,691.58x = 2,850,676.62
  5. Step 5: Solve for x
    x = 2,850,676.62/1,691.58
  6. Step 6: Final answer
    x = 1,685.22

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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.