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Finding the Fourth Proportional to 7,996.60, 12,009.30 and 5,807.80

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Solution

The fourth proportional to 7,996.60, 12,009.30 and 5,807.80 is: 8,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,996.60 : 12,009.30 = 5,807.80 : x
  2. Step 2: Convert to fraction form
    7,996.60/12,009.30 = 5,807.80/x
  3. Step 3: Cross multiply
    7,996.60x = 12,009.30 × 5,807.80
  4. Step 4: Simplify right side
    7,996.60x = 69,747,612.54
  5. Step 5: Solve for x
    x = 69,747,612.54/7,996.60
  6. Step 6: Final answer
    x = 8,722.16

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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.