Home / 2,212.39-3,318.60-1,054.63

Finding the Fourth Proportional to 2,212.39, 3,318.60 and 1,054.63

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Solution

The fourth proportional to 2,212.39, 3,318.60 and 1,054.63 is: 1,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.39 : 3,318.60 = 1,054.63 : x
  2. Step 2: Convert to fraction form
    2,212.39/3,318.60 = 1,054.63/x
  3. Step 3: Cross multiply
    2,212.39x = 3,318.60 × 1,054.63
  4. Step 4: Simplify right side
    2,212.39x = 3,499,895.12
  5. Step 5: Solve for x
    x = 3,499,895.12/2,212.39
  6. Step 6: Final answer
    x = 1,581.95

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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.