Home / 8,007.20-12,009.40-2,164.28

Finding the Fourth Proportional to 8,007.20, 12,009.40 and 2,164.28

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Solution

The fourth proportional to 8,007.20, 12,009.40 and 2,164.28 is: 3,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,007.20 : 12,009.40 = 2,164.28 : x
  2. Step 2: Convert to fraction form
    8,007.20/12,009.40 = 2,164.28/x
  3. Step 3: Cross multiply
    8,007.20x = 12,009.40 × 2,164.28
  4. Step 4: Simplify right side
    8,007.20x = 25,991,704.23
  5. Step 5: Solve for x
    x = 25,991,704.23/8,007.20
  6. Step 6: Final answer
    x = 3,246.04

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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.