Home / 1,237.22-1,694.37-1,221.02

Finding the Fourth Proportional to 1,237.22, 1,694.37 and 1,221.02

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Solution

The fourth proportional to 1,237.22, 1,694.37 and 1,221.02 is: 1,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.22 : 1,694.37 = 1,221.02 : x
  2. Step 2: Convert to fraction form
    1,237.22/1,694.37 = 1,221.02/x
  3. Step 3: Cross multiply
    1,237.22x = 1,694.37 × 1,221.02
  4. Step 4: Simplify right side
    1,237.22x = 2,068,853.55
  5. Step 5: Solve for x
    x = 2,068,853.55/1,237.22
  6. Step 6: Final answer
    x = 1,672.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.