Home / 5,186.89-7,157.86-2,828.98

Finding the Fourth Proportional to 5,186.89, 7,157.86 and 2,828.98

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Solution

The fourth proportional to 5,186.89, 7,157.86 and 2,828.98 is: 3,903.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.89 : 7,157.86 = 2,828.98 : x
  2. Step 2: Convert to fraction form
    5,186.89/7,157.86 = 2,828.98/x
  3. Step 3: Cross multiply
    5,186.89x = 7,157.86 × 2,828.98
  4. Step 4: Simplify right side
    5,186.89x = 20,249,442.78
  5. Step 5: Solve for x
    x = 20,249,442.78/5,186.89
  6. Step 6: Final answer
    x = 3,903.97

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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.