Home / 5,355.20-8,035.20-2,580.80

Finding the Fourth Proportional to 5,355.20, 8,035.20 and 2,580.80

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Solution

The fourth proportional to 5,355.20, 8,035.20 and 2,580.80 is: 3,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.20 : 8,035.20 = 2,580.80 : x
  2. Step 2: Convert to fraction form
    5,355.20/8,035.20 = 2,580.80/x
  3. Step 3: Cross multiply
    5,355.20x = 8,035.20 × 2,580.80
  4. Step 4: Simplify right side
    5,355.20x = 20,737,244.16
  5. Step 5: Solve for x
    x = 20,737,244.16/5,355.20
  6. Step 6: Final answer
    x = 3,872.36

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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.