Home / 1,221.06-1,829.24-808.98

Finding the Fourth Proportional to 1,221.06, 1,829.24 and 808.98

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Solution

The fourth proportional to 1,221.06, 1,829.24 and 808.98 is: 1,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.06 : 1,829.24 = 808.98 : x
  2. Step 2: Convert to fraction form
    1,221.06/1,829.24 = 808.98/x
  3. Step 3: Cross multiply
    1,221.06x = 1,829.24 × 808.98
  4. Step 4: Simplify right side
    1,221.06x = 1,479,818.58
  5. Step 5: Solve for x
    x = 1,479,818.58/1,221.06
  6. Step 6: Final answer
    x = 1,211.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.