Home / 8,487.45-12,722.40-3,809.70

Finding the Fourth Proportional to 8,487.45, 12,722.40 and 3,809.70

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Solution

The fourth proportional to 8,487.45, 12,722.40 and 3,809.70 is: 5,710.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.45 : 12,722.40 = 3,809.70 : x
  2. Step 2: Convert to fraction form
    8,487.45/12,722.40 = 3,809.70/x
  3. Step 3: Cross multiply
    8,487.45x = 12,722.40 × 3,809.70
  4. Step 4: Simplify right side
    8,487.45x = 48,468,527.28
  5. Step 5: Solve for x
    x = 48,468,527.28/8,487.45
  6. Step 6: Final answer
    x = 5,710.61

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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.