Home / 8,138.16-11,211.48-6,712.56

Finding the Fourth Proportional to 8,138.16, 11,211.48 and 6,712.56

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Solution

The fourth proportional to 8,138.16, 11,211.48 and 6,712.56 is: 9,247.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.16 : 11,211.48 = 6,712.56 : x
  2. Step 2: Convert to fraction form
    8,138.16/11,211.48 = 6,712.56/x
  3. Step 3: Cross multiply
    8,138.16x = 11,211.48 × 6,712.56
  4. Step 4: Simplify right side
    8,138.16x = 75,257,732.19
  5. Step 5: Solve for x
    x = 75,257,732.19/8,138.16
  6. Step 6: Final answer
    x = 9,247.51

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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.