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Finding the Fourth Proportional to 8,859.75, 13,288.48 and 2,620.43

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Solution

The fourth proportional to 8,859.75, 13,288.48 and 2,620.43 is: 3,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.75 : 13,288.48 = 2,620.43 : x
  2. Step 2: Convert to fraction form
    8,859.75/13,288.48 = 2,620.43/x
  3. Step 3: Cross multiply
    8,859.75x = 13,288.48 × 2,620.43
  4. Step 4: Simplify right side
    8,859.75x = 34,821,478.48
  5. Step 5: Solve for x
    x = 34,821,478.48/8,859.75
  6. Step 6: Final answer
    x = 3,930.30

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1.5x scale

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.