Home / 8,122.30-11,213.99-6,633.79

Finding the Fourth Proportional to 8,122.30, 11,213.99 and 6,633.79

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Solution

The fourth proportional to 8,122.30, 11,213.99 and 6,633.79 is: 9,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.30 : 11,213.99 = 6,633.79 : x
  2. Step 2: Convert to fraction form
    8,122.30/11,213.99 = 6,633.79/x
  3. Step 3: Cross multiply
    8,122.30x = 11,213.99 × 6,633.79
  4. Step 4: Simplify right side
    8,122.30x = 74,391,254.72
  5. Step 5: Solve for x
    x = 74,391,254.72/8,122.30
  6. Step 6: Final answer
    x = 9,158.89

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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.