Home / 5,186.85-7,157.81-2,828.94

Finding the Fourth Proportional to 5,186.85, 7,157.81 and 2,828.94

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Solution

The fourth proportional to 5,186.85, 7,157.81 and 2,828.94 is: 3,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.85 : 7,157.81 = 2,828.94 : x
  2. Step 2: Convert to fraction form
    5,186.85/7,157.81 = 2,828.94/x
  3. Step 3: Cross multiply
    5,186.85x = 7,157.81 × 2,828.94
  4. Step 4: Simplify right side
    5,186.85x = 20,249,000.88
  5. Step 5: Solve for x
    x = 20,249,000.88/5,186.85
  6. Step 6: Final answer
    x = 3,903.91

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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.