Home / 6,609.12-9,911.39-2,659.20

Finding the Fourth Proportional to 6,609.12, 9,911.39 and 2,659.20

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Solution

The fourth proportional to 6,609.12, 9,911.39 and 2,659.20 is: 3,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.12 : 9,911.39 = 2,659.20 : x
  2. Step 2: Convert to fraction form
    6,609.12/9,911.39 = 2,659.20/x
  3. Step 3: Cross multiply
    6,609.12x = 9,911.39 × 2,659.20
  4. Step 4: Simplify right side
    6,609.12x = 26,356,354.99
  5. Step 5: Solve for x
    x = 26,356,354.99/6,609.12
  6. Step 6: Final answer
    x = 3,987.88

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1.5x scale

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.