Home / 8,009.28-12,009.60-3,080.16

Finding the Fourth Proportional to 8,009.28, 12,009.60 and 3,080.16

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Solution

The fourth proportional to 8,009.28, 12,009.60 and 3,080.16 is: 4,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.28 : 12,009.60 = 3,080.16 : x
  2. Step 2: Convert to fraction form
    8,009.28/12,009.60 = 3,080.16/x
  3. Step 3: Cross multiply
    8,009.28x = 12,009.60 × 3,080.16
  4. Step 4: Simplify right side
    8,009.28x = 36,991,489.54
  5. Step 5: Solve for x
    x = 36,991,489.54/8,009.28
  6. Step 6: Final answer
    x = 4,618.58

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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.