Home / 2,211.10-3,316.75-1,172.07

Finding the Fourth Proportional to 2,211.10, 3,316.75 and 1,172.07

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Solution

The fourth proportional to 2,211.10, 3,316.75 and 1,172.07 is: 1,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.10 : 3,316.75 = 1,172.07 : x
  2. Step 2: Convert to fraction form
    2,211.10/3,316.75 = 1,172.07/x
  3. Step 3: Cross multiply
    2,211.10x = 3,316.75 × 1,172.07
  4. Step 4: Simplify right side
    2,211.10x = 3,887,460.24
  5. Step 5: Solve for x
    x = 3,887,460.24/2,211.10
  6. Step 6: Final answer
    x = 1,758.16

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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.