Home / 7,078.54-10,611.87-3,129.16

Finding the Fourth Proportional to 7,078.54, 10,611.87 and 3,129.16

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Solution

The fourth proportional to 7,078.54, 10,611.87 and 3,129.16 is: 4,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.54 : 10,611.87 = 3,129.16 : x
  2. Step 2: Convert to fraction form
    7,078.54/10,611.87 = 3,129.16/x
  3. Step 3: Cross multiply
    7,078.54x = 10,611.87 × 3,129.16
  4. Step 4: Simplify right side
    7,078.54x = 33,206,239.13
  5. Step 5: Solve for x
    x = 33,206,239.13/7,078.54
  6. Step 6: Final answer
    x = 4,691.11

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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.