Home / 5,057.07-6,979.20-2,961.60

Finding the Fourth Proportional to 5,057.07, 6,979.20 and 2,961.60

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Solution

The fourth proportional to 5,057.07, 6,979.20 and 2,961.60 is: 4,087.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.07 : 6,979.20 = 2,961.60 : x
  2. Step 2: Convert to fraction form
    5,057.07/6,979.20 = 2,961.60/x
  3. Step 3: Cross multiply
    5,057.07x = 6,979.20 × 2,961.60
  4. Step 4: Simplify right side
    5,057.07x = 20,669,598.72
  5. Step 5: Solve for x
    x = 20,669,598.72/5,057.07
  6. Step 6: Final answer
    x = 4,087.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.