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Finding the Fourth Proportional to 8,906.62, 12,291.15 and 4,928.01

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Solution

The fourth proportional to 8,906.62, 12,291.15 and 4,928.01 is: 6,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.62 : 12,291.15 = 4,928.01 : x
  2. Step 2: Convert to fraction form
    8,906.62/12,291.15 = 4,928.01/x
  3. Step 3: Cross multiply
    8,906.62x = 12,291.15 × 4,928.01
  4. Step 4: Simplify right side
    8,906.62x = 60,570,824.02
  5. Step 5: Solve for x
    x = 60,570,824.02/8,906.62
  6. Step 6: Final answer
    x = 6,800.65

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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.