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Finding the Fourth Proportional to 8,945.54, 12,357.90 and 6,600.62

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Solution

The fourth proportional to 8,945.54, 12,357.90 and 6,600.62 is: 9,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.54 : 12,357.90 = 6,600.62 : x
  2. Step 2: Convert to fraction form
    8,945.54/12,357.90 = 6,600.62/x
  3. Step 3: Cross multiply
    8,945.54x = 12,357.90 × 6,600.62
  4. Step 4: Simplify right side
    8,945.54x = 81,569,801.90
  5. Step 5: Solve for x
    x = 81,569,801.90/8,945.54
  6. Step 6: Final answer
    x = 9,118.49

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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.