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Finding the Fourth Proportional to 8,066.79, 12,099.78 and 7,640.19

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Solution

The fourth proportional to 8,066.79, 12,099.78 and 7,640.19 is: 11,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,066.79 : 12,099.78 = 7,640.19 : x
  2. Step 2: Convert to fraction form
    8,066.79/12,099.78 = 7,640.19/x
  3. Step 3: Cross multiply
    8,066.79x = 12,099.78 × 7,640.19
  4. Step 4: Simplify right side
    8,066.79x = 92,444,618.16
  5. Step 5: Solve for x
    x = 92,444,618.16/8,066.79
  6. Step 6: Final answer
    x = 11,459.90

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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.