Home / 8,360.72-11,531.39-6,121.79

Finding the Fourth Proportional to 8,360.72, 11,531.39 and 6,121.79

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Solution

The fourth proportional to 8,360.72, 11,531.39 and 6,121.79 is: 8,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.72 : 11,531.39 = 6,121.79 : x
  2. Step 2: Convert to fraction form
    8,360.72/11,531.39 = 6,121.79/x
  3. Step 3: Cross multiply
    8,360.72x = 11,531.39 × 6,121.79
  4. Step 4: Simplify right side
    8,360.72x = 70,592,747.99
  5. Step 5: Solve for x
    x = 70,592,747.99/8,360.72
  6. Step 6: Final answer
    x = 8,443.38

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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.