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Finding the Fourth Proportional to 8,818.45, 12,169.81 and 4,839.70

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Solution

The fourth proportional to 8,818.45, 12,169.81 and 4,839.70 is: 6,678.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.45 : 12,169.81 = 4,839.70 : x
  2. Step 2: Convert to fraction form
    8,818.45/12,169.81 = 4,839.70/x
  3. Step 3: Cross multiply
    8,818.45x = 12,169.81 × 4,839.70
  4. Step 4: Simplify right side
    8,818.45x = 58,898,229.46
  5. Step 5: Solve for x
    x = 58,898,229.46/8,818.45
  6. Step 6: Final answer
    x = 6,678.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.