Home / 7,115.57-10,679.91-3,608.03

Finding the Fourth Proportional to 7,115.57, 10,679.91 and 3,608.03

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Solution

The fourth proportional to 7,115.57, 10,679.91 and 3,608.03 is: 5,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.57 : 10,679.91 = 3,608.03 : x
  2. Step 2: Convert to fraction form
    7,115.57/10,679.91 = 3,608.03/x
  3. Step 3: Cross multiply
    7,115.57x = 10,679.91 × 3,608.03
  4. Step 4: Simplify right side
    7,115.57x = 38,533,462.38
  5. Step 5: Solve for x
    x = 38,533,462.38/7,115.57
  6. Step 6: Final answer
    x = 5,415.38

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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.