Home / 2,647.11-3,973.23-2,211.15

Finding the Fourth Proportional to 2,647.11, 3,973.23 and 2,211.15

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Solution

The fourth proportional to 2,647.11, 3,973.23 and 2,211.15 is: 3,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.11 : 3,973.23 = 2,211.15 : x
  2. Step 2: Convert to fraction form
    2,647.11/3,973.23 = 2,211.15/x
  3. Step 3: Cross multiply
    2,647.11x = 3,973.23 × 2,211.15
  4. Step 4: Simplify right side
    2,647.11x = 8,785,407.51
  5. Step 5: Solve for x
    x = 8,785,407.51/2,647.11
  6. Step 6: Final answer
    x = 3,318.87

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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.