Home / 1,211-1,815.38-1,104.12

Finding the Fourth Proportional to 1,211, 1,815.38 and 1,104.12

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Solution

The fourth proportional to 1,211, 1,815.38 and 1,104.12 is: 1,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211 : 1,815.38 = 1,104.12 : x
  2. Step 2: Convert to fraction form
    1,211/1,815.38 = 1,104.12/x
  3. Step 3: Cross multiply
    1,211x = 1,815.38 × 1,104.12
  4. Step 4: Simplify right side
    1,211x = 2,004,397.37
  5. Step 5: Solve for x
    x = 2,004,397.37/1,211
  6. Step 6: Final answer
    x = 1,655.16

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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.