Home / 8,176.96-11,278.12-5,190.20

Finding the Fourth Proportional to 8,176.96, 11,278.12 and 5,190.20

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Solution

The fourth proportional to 8,176.96, 11,278.12 and 5,190.20 is: 7,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,176.96 : 11,278.12 = 5,190.20 : x
  2. Step 2: Convert to fraction form
    8,176.96/11,278.12 = 5,190.20/x
  3. Step 3: Cross multiply
    8,176.96x = 11,278.12 × 5,190.20
  4. Step 4: Simplify right side
    8,176.96x = 58,535,698.42
  5. Step 5: Solve for x
    x = 58,535,698.42/8,176.96
  6. Step 6: Final answer
    x = 7,158.61

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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.