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Finding the Fourth Proportional to 8,906.83, 12,290.74 and 4,927.64

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Solution

The fourth proportional to 8,906.83, 12,290.74 and 4,927.64 is: 6,799.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.83 : 12,290.74 = 4,927.64 : x
  2. Step 2: Convert to fraction form
    8,906.83/12,290.74 = 4,927.64/x
  3. Step 3: Cross multiply
    8,906.83x = 12,290.74 × 4,927.64
  4. Step 4: Simplify right side
    8,906.83x = 60,564,268.28
  5. Step 5: Solve for x
    x = 60,564,268.28/8,906.83
  6. Step 6: Final answer
    x = 6,799.76

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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.