Home / 2,211.39-3,051.68-1,216.66

Finding the Fourth Proportional to 2,211.39, 3,051.68 and 1,216.66

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Solution

The fourth proportional to 2,211.39, 3,051.68 and 1,216.66 is: 1,678.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.39 : 3,051.68 = 1,216.66 : x
  2. Step 2: Convert to fraction form
    2,211.39/3,051.68 = 1,216.66/x
  3. Step 3: Cross multiply
    2,211.39x = 3,051.68 × 1,216.66
  4. Step 4: Simplify right side
    2,211.39x = 3,712,852.40
  5. Step 5: Solve for x
    x = 3,712,852.40/2,211.39
  6. Step 6: Final answer
    x = 1,678.97

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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.