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Finding the Fourth Proportional to 8,550.78, 12,815.37 and 7,283.58

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Solution

The fourth proportional to 8,550.78, 12,815.37 and 7,283.58 is: 10,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,550.78 : 12,815.37 = 7,283.58 : x
  2. Step 2: Convert to fraction form
    8,550.78/12,815.37 = 7,283.58/x
  3. Step 3: Cross multiply
    8,550.78x = 12,815.37 × 7,283.58
  4. Step 4: Simplify right side
    8,550.78x = 93,341,772.62
  5. Step 5: Solve for x
    x = 93,341,772.62/8,550.78
  6. Step 6: Final answer
    x = 10,916.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.