Home / 8,765.87-13,148.36-3,218.79

Finding the Fourth Proportional to 8,765.87, 13,148.36 and 3,218.79

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Solution

The fourth proportional to 8,765.87, 13,148.36 and 3,218.79 is: 4,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.87 : 13,148.36 = 3,218.79 : x
  2. Step 2: Convert to fraction form
    8,765.87/13,148.36 = 3,218.79/x
  3. Step 3: Cross multiply
    8,765.87x = 13,148.36 × 3,218.79
  4. Step 4: Simplify right side
    8,765.87x = 42,321,781.01
  5. Step 5: Solve for x
    x = 42,321,781.01/8,765.87
  6. Step 6: Final answer
    x = 4,828.02

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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.