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Finding the Fourth Proportional to 8,794.40, 12,136.47 and 4,815.68

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Solution

The fourth proportional to 8,794.40, 12,136.47 and 4,815.68 is: 6,645.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.40 : 12,136.47 = 4,815.68 : x
  2. Step 2: Convert to fraction form
    8,794.40/12,136.47 = 4,815.68/x
  3. Step 3: Cross multiply
    8,794.40x = 12,136.47 × 4,815.68
  4. Step 4: Simplify right side
    8,794.40x = 58,445,355.85
  5. Step 5: Solve for x
    x = 58,445,355.85/8,794.40
  6. Step 6: Final answer
    x = 6,645.75

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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.