Home / 8,765.20-13,135.80-5,635.60

Finding the Fourth Proportional to 8,765.20, 13,135.80 and 5,635.60

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Solution

The fourth proportional to 8,765.20, 13,135.80 and 5,635.60 is: 8,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.20 : 13,135.80 = 5,635.60 : x
  2. Step 2: Convert to fraction form
    8,765.20/13,135.80 = 5,635.60/x
  3. Step 3: Cross multiply
    8,765.20x = 13,135.80 × 5,635.60
  4. Step 4: Simplify right side
    8,765.20x = 74,028,114.48
  5. Step 5: Solve for x
    x = 74,028,114.48/8,765.20
  6. Step 6: Final answer
    x = 8,445.68

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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.