Home / 2,212.66-3,318.99-1,117.95

Finding the Fourth Proportional to 2,212.66, 3,318.99 and 1,117.95

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Solution

The fourth proportional to 2,212.66, 3,318.99 and 1,117.95 is: 1,676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.66 : 3,318.99 = 1,117.95 : x
  2. Step 2: Convert to fraction form
    2,212.66/3,318.99 = 1,117.95/x
  3. Step 3: Cross multiply
    2,212.66x = 3,318.99 × 1,117.95
  4. Step 4: Simplify right side
    2,212.66x = 3,710,464.87
  5. Step 5: Solve for x
    x = 3,710,464.87/2,212.66
  6. Step 6: Final answer
    x = 1,676.93

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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.