Home / 8,126.07-12,189.60-3,969.60

Finding the Fourth Proportional to 8,126.07, 12,189.60 and 3,969.60

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Solution

The fourth proportional to 8,126.07, 12,189.60 and 3,969.60 is: 5,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.07 : 12,189.60 = 3,969.60 : x
  2. Step 2: Convert to fraction form
    8,126.07/12,189.60 = 3,969.60/x
  3. Step 3: Cross multiply
    8,126.07x = 12,189.60 × 3,969.60
  4. Step 4: Simplify right side
    8,126.07x = 48,387,836.16
  5. Step 5: Solve for x
    x = 48,387,836.16/8,126.07
  6. Step 6: Final answer
    x = 5,954.64

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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.