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Finding the Fourth Proportional to 8,785.35, 12,123.78 and 4,806.47

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Solution

The fourth proportional to 8,785.35, 12,123.78 and 4,806.47 is: 6,632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.35 : 12,123.78 = 4,806.47 : x
  2. Step 2: Convert to fraction form
    8,785.35/12,123.78 = 4,806.47/x
  3. Step 3: Cross multiply
    8,785.35x = 12,123.78 × 4,806.47
  4. Step 4: Simplify right side
    8,785.35x = 58,272,584.86
  5. Step 5: Solve for x
    x = 58,272,584.86/8,785.35
  6. Step 6: Final answer
    x = 6,632.93

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