Home / 8,109.96-11,184.28-5,120.60

Finding the Fourth Proportional to 8,109.96, 11,184.28 and 5,120.60

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Solution

The fourth proportional to 8,109.96, 11,184.28 and 5,120.60 is: 7,061.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.96 : 11,184.28 = 5,120.60 : x
  2. Step 2: Convert to fraction form
    8,109.96/11,184.28 = 5,120.60/x
  3. Step 3: Cross multiply
    8,109.96x = 11,184.28 × 5,120.60
  4. Step 4: Simplify right side
    8,109.96x = 57,270,224.17
  5. Step 5: Solve for x
    x = 57,270,224.17/8,109.96
  6. Step 6: Final answer
    x = 7,061.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.