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Finding the Fourth Proportional to 8,722.81, 13,085.84 and 4,039.73

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Solution

The fourth proportional to 8,722.81, 13,085.84 and 4,039.73 is: 6,060.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.81 : 13,085.84 = 4,039.73 : x
  2. Step 2: Convert to fraction form
    8,722.81/13,085.84 = 4,039.73/x
  3. Step 3: Cross multiply
    8,722.81x = 13,085.84 × 4,039.73
  4. Step 4: Simplify right side
    8,722.81x = 52,863,174.80
  5. Step 5: Solve for x
    x = 52,863,174.80/8,722.81
  6. Step 6: Final answer
    x = 6,060.34

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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.