Home / 7,115.93-10,680.36-3,608.38

Finding the Fourth Proportional to 7,115.93, 10,680.36 and 3,608.38

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Solution

The fourth proportional to 7,115.93, 10,680.36 and 3,608.38 is: 5,415.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.93 : 10,680.36 = 3,608.38 : x
  2. Step 2: Convert to fraction form
    7,115.93/10,680.36 = 3,608.38/x
  3. Step 3: Cross multiply
    7,115.93x = 10,680.36 × 3,608.38
  4. Step 4: Simplify right side
    7,115.93x = 38,538,797.24
  5. Step 5: Solve for x
    x = 38,538,797.24/7,115.93
  6. Step 6: Final answer
    x = 5,415.84

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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.