Home / 2,211.76-3,051.97-1,216.95

Finding the Fourth Proportional to 2,211.76, 3,051.97 and 1,216.95

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Solution

The fourth proportional to 2,211.76, 3,051.97 and 1,216.95 is: 1,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.76 : 3,051.97 = 1,216.95 : x
  2. Step 2: Convert to fraction form
    2,211.76/3,051.97 = 1,216.95/x
  3. Step 3: Cross multiply
    2,211.76x = 3,051.97 × 1,216.95
  4. Step 4: Simplify right side
    2,211.76x = 3,714,094.89
  5. Step 5: Solve for x
    x = 3,714,094.89/2,211.76
  6. Step 6: Final answer
    x = 1,679.25

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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.