Home / 8,859.92-13,287.36-2,620.40

Finding the Fourth Proportional to 8,859.92, 13,287.36 and 2,620.40

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Solution

The fourth proportional to 8,859.92, 13,287.36 and 2,620.40 is: 3,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.92 : 13,287.36 = 2,620.40 : x
  2. Step 2: Convert to fraction form
    8,859.92/13,287.36 = 2,620.40/x
  3. Step 3: Cross multiply
    8,859.92x = 13,287.36 × 2,620.40
  4. Step 4: Simplify right side
    8,859.92x = 34,818,198.14
  5. Step 5: Solve for x
    x = 34,818,198.14/8,859.92
  6. Step 6: Final answer
    x = 3,929.85

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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.