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Finding the Fourth Proportional to 8,006.92, 12,009.96 and 2,812.40

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Solution

The fourth proportional to 8,006.92, 12,009.96 and 2,812.40 is: 4,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.92 : 12,009.96 = 2,812.40 : x
  2. Step 2: Convert to fraction form
    8,006.92/12,009.96 = 2,812.40/x
  3. Step 3: Cross multiply
    8,006.92x = 12,009.96 × 2,812.40
  4. Step 4: Simplify right side
    8,006.92x = 33,776,811.50
  5. Step 5: Solve for x
    x = 33,776,811.50/8,006.92
  6. Step 6: Final answer
    x = 4,218.45

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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.