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Finding the Fourth Proportional to 8,859.70, 13,290.36 and 2,285.90

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Solution

The fourth proportional to 8,859.70, 13,290.36 and 2,285.90 is: 3,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.70 : 13,290.36 = 2,285.90 : x
  2. Step 2: Convert to fraction form
    8,859.70/13,290.36 = 2,285.90/x
  3. Step 3: Cross multiply
    8,859.70x = 13,290.36 × 2,285.90
  4. Step 4: Simplify right side
    8,859.70x = 30,380,433.92
  5. Step 5: Solve for x
    x = 30,380,433.92/8,859.70
  6. Step 6: Final answer
    x = 3,429.06

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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.