Home / 9,191.36-12,682.32-5,211.56

Finding the Fourth Proportional to 9,191.36, 12,682.32 and 5,211.56

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Solution

The fourth proportional to 9,191.36, 12,682.32 and 5,211.56 is: 7,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.36 : 12,682.32 = 5,211.56 : x
  2. Step 2: Convert to fraction form
    9,191.36/12,682.32 = 5,211.56/x
  3. Step 3: Cross multiply
    9,191.36x = 12,682.32 × 5,211.56
  4. Step 4: Simplify right side
    9,191.36x = 66,094,671.62
  5. Step 5: Solve for x
    x = 66,094,671.62/9,191.36
  6. Step 6: Final answer
    x = 7,190.96

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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.