Home / 2,815.08-4,221.34-1,171.24

Finding the Fourth Proportional to 2,815.08, 4,221.34 and 1,171.24

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Solution

The fourth proportional to 2,815.08, 4,221.34 and 1,171.24 is: 1,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.08 : 4,221.34 = 1,171.24 : x
  2. Step 2: Convert to fraction form
    2,815.08/4,221.34 = 1,171.24/x
  3. Step 3: Cross multiply
    2,815.08x = 4,221.34 × 1,171.24
  4. Step 4: Simplify right side
    2,815.08x = 4,944,202.26
  5. Step 5: Solve for x
    x = 4,944,202.26/2,815.08
  6. Step 6: Final answer
    x = 1,756.33

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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.