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Finding the Fourth Proportional to 8,906.90, 12,295.60 and 6,356.60

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Solution

The fourth proportional to 8,906.90, 12,295.60 and 6,356.60 is: 8,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.90 : 12,295.60 = 6,356.60 : x
  2. Step 2: Convert to fraction form
    8,906.90/12,295.60 = 6,356.60/x
  3. Step 3: Cross multiply
    8,906.90x = 12,295.60 × 6,356.60
  4. Step 4: Simplify right side
    8,906.90x = 78,158,210.96
  5. Step 5: Solve for x
    x = 78,158,210.96/8,906.90
  6. Step 6: Final answer
    x = 8,775.02

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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.