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Finding the Fourth Proportional to 8,808.60, 12,155.91 and 4,829.78

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Solution

The fourth proportional to 8,808.60, 12,155.91 and 4,829.78 is: 6,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.60 : 12,155.91 = 4,829.78 : x
  2. Step 2: Convert to fraction form
    8,808.60/12,155.91 = 4,829.78/x
  3. Step 3: Cross multiply
    8,808.60x = 12,155.91 × 4,829.78
  4. Step 4: Simplify right side
    8,808.60x = 58,710,371.00
  5. Step 5: Solve for x
    x = 58,710,371.00/8,808.60
  6. Step 6: Final answer
    x = 6,665.12

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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.