Home / 7,720.28-11,578.59-2,174.12

Finding the Fourth Proportional to 7,720.28, 11,578.59 and 2,174.12

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Solution

The fourth proportional to 7,720.28, 11,578.59 and 2,174.12 is: 3,260.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.28 : 11,578.59 = 2,174.12 : x
  2. Step 2: Convert to fraction form
    7,720.28/11,578.59 = 2,174.12/x
  3. Step 3: Cross multiply
    7,720.28x = 11,578.59 × 2,174.12
  4. Step 4: Simplify right side
    7,720.28x = 25,173,244.09
  5. Step 5: Solve for x
    x = 25,173,244.09/7,720.28
  6. Step 6: Final answer
    x = 3,260.66

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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.