Home / 5,456.30-8,186.87-2,858.63

Finding the Fourth Proportional to 5,456.30, 8,186.87 and 2,858.63

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Solution

The fourth proportional to 5,456.30, 8,186.87 and 2,858.63 is: 4,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.30 : 8,186.87 = 2,858.63 : x
  2. Step 2: Convert to fraction form
    5,456.30/8,186.87 = 2,858.63/x
  3. Step 3: Cross multiply
    5,456.30x = 8,186.87 × 2,858.63
  4. Step 4: Simplify right side
    5,456.30x = 23,403,198.40
  5. Step 5: Solve for x
    x = 23,403,198.40/5,456.30
  6. Step 6: Final answer
    x = 4,289.21

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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.