Home / 2,211.01-3,312.87-1,387.24

Finding the Fourth Proportional to 2,211.01, 3,312.87 and 1,387.24

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Solution

The fourth proportional to 2,211.01, 3,312.87 and 1,387.24 is: 2,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.01 : 3,312.87 = 1,387.24 : x
  2. Step 2: Convert to fraction form
    2,211.01/3,312.87 = 1,387.24/x
  3. Step 3: Cross multiply
    2,211.01x = 3,312.87 × 1,387.24
  4. Step 4: Simplify right side
    2,211.01x = 4,595,745.78
  5. Step 5: Solve for x
    x = 4,595,745.78/2,211.01
  6. Step 6: Final answer
    x = 2,078.57

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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.