Home / 8,112.72-11,189.16-5,317.68

Finding the Fourth Proportional to 8,112.72, 11,189.16 and 5,317.68

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Solution

The fourth proportional to 8,112.72, 11,189.16 and 5,317.68 is: 7,334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.72 : 11,189.16 = 5,317.68 : x
  2. Step 2: Convert to fraction form
    8,112.72/11,189.16 = 5,317.68/x
  3. Step 3: Cross multiply
    8,112.72x = 11,189.16 × 5,317.68
  4. Step 4: Simplify right side
    8,112.72x = 59,500,372.35
  5. Step 5: Solve for x
    x = 59,500,372.35/8,112.72
  6. Step 6: Final answer
    x = 7,334.21

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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.