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Finding the Fourth Proportional to 8,794.29, 12,136.40 and 4,815.78

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Solution

The fourth proportional to 8,794.29, 12,136.40 and 4,815.78 is: 6,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.29 : 12,136.40 = 4,815.78 : x
  2. Step 2: Convert to fraction form
    8,794.29/12,136.40 = 4,815.78/x
  3. Step 3: Cross multiply
    8,794.29x = 12,136.40 × 4,815.78
  4. Step 4: Simplify right side
    8,794.29x = 58,446,208.31
  5. Step 5: Solve for x
    x = 58,446,208.31/8,794.29
  6. Step 6: Final answer
    x = 6,645.93

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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.