Home / 6,481.12-9,720.60-2,101.72

Finding the Fourth Proportional to 6,481.12, 9,720.60 and 2,101.72

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Solution

The fourth proportional to 6,481.12, 9,720.60 and 2,101.72 is: 3,152.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.12 : 9,720.60 = 2,101.72 : x
  2. Step 2: Convert to fraction form
    6,481.12/9,720.60 = 2,101.72/x
  3. Step 3: Cross multiply
    6,481.12x = 9,720.60 × 2,101.72
  4. Step 4: Simplify right side
    6,481.12x = 20,429,979.43
  5. Step 5: Solve for x
    x = 20,429,979.43/6,481.12
  6. Step 6: Final answer
    x = 3,152.23

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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.