Home / 2,211.36-3,316.29-1,115.02

Finding the Fourth Proportional to 2,211.36, 3,316.29 and 1,115.02

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Solution

The fourth proportional to 2,211.36, 3,316.29 and 1,115.02 is: 1,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.36 : 3,316.29 = 1,115.02 : x
  2. Step 2: Convert to fraction form
    2,211.36/3,316.29 = 1,115.02/x
  3. Step 3: Cross multiply
    2,211.36x = 3,316.29 × 1,115.02
  4. Step 4: Simplify right side
    2,211.36x = 3,697,729.68
  5. Step 5: Solve for x
    x = 3,697,729.68/2,211.36
  6. Step 6: Final answer
    x = 1,672.15

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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.