Home / 5,813.20-8,719.80-2,116.60

Finding the Fourth Proportional to 5,813.20, 8,719.80 and 2,116.60

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Solution

The fourth proportional to 5,813.20, 8,719.80 and 2,116.60 is: 3,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.20 : 8,719.80 = 2,116.60 : x
  2. Step 2: Convert to fraction form
    5,813.20/8,719.80 = 2,116.60/x
  3. Step 3: Cross multiply
    5,813.20x = 8,719.80 × 2,116.60
  4. Step 4: Simplify right side
    5,813.20x = 18,456,328.68
  5. Step 5: Solve for x
    x = 18,456,328.68/5,813.20
  6. Step 6: Final answer
    x = 3,174.90

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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.