Home / 2,211.90-3,317.86-1,054.14

Finding the Fourth Proportional to 2,211.90, 3,317.86 and 1,054.14

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Solution

The fourth proportional to 2,211.90, 3,317.86 and 1,054.14 is: 1,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.90 : 3,317.86 = 1,054.14 : x
  2. Step 2: Convert to fraction form
    2,211.90/3,317.86 = 1,054.14/x
  3. Step 3: Cross multiply
    2,211.90x = 3,317.86 × 1,054.14
  4. Step 4: Simplify right side
    2,211.90x = 3,497,488.94
  5. Step 5: Solve for x
    x = 3,497,488.94/2,211.90
  6. Step 6: Final answer
    x = 1,581.21

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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.