Home / 5,105.81-7,045.77-2,867.64

Finding the Fourth Proportional to 5,105.81, 7,045.77 and 2,867.64

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Solution

The fourth proportional to 5,105.81, 7,045.77 and 2,867.64 is: 3,957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.81 : 7,045.77 = 2,867.64 : x
  2. Step 2: Convert to fraction form
    5,105.81/7,045.77 = 2,867.64/x
  3. Step 3: Cross multiply
    5,105.81x = 7,045.77 × 2,867.64
  4. Step 4: Simplify right side
    5,105.81x = 20,204,731.88
  5. Step 5: Solve for x
    x = 20,204,731.88/5,105.81
  6. Step 6: Final answer
    x = 3,957.21

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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.