Home / 6,480.12-9,720.48-2,097.92

Finding the Fourth Proportional to 6,480.12, 9,720.48 and 2,097.92

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Solution

The fourth proportional to 6,480.12, 9,720.48 and 2,097.92 is: 3,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.12 : 9,720.48 = 2,097.92 : x
  2. Step 2: Convert to fraction form
    6,480.12/9,720.48 = 2,097.92/x
  3. Step 3: Cross multiply
    6,480.12x = 9,720.48 × 2,097.92
  4. Step 4: Simplify right side
    6,480.12x = 20,392,789.40
  5. Step 5: Solve for x
    x = 20,392,789.40/6,480.12
  6. Step 6: Final answer
    x = 3,146.98

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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.