Home / 8,428.68-11,635.38-6,186.60

Finding the Fourth Proportional to 8,428.68, 11,635.38 and 6,186.60

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Solution

The fourth proportional to 8,428.68, 11,635.38 and 6,186.60 is: 8,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.68 : 11,635.38 = 6,186.60 : x
  2. Step 2: Convert to fraction form
    8,428.68/11,635.38 = 6,186.60/x
  3. Step 3: Cross multiply
    8,428.68x = 11,635.38 × 6,186.60
  4. Step 4: Simplify right side
    8,428.68x = 71,983,441.91
  5. Step 5: Solve for x
    x = 71,983,441.91/8,428.68
  6. Step 6: Final answer
    x = 8,540.30

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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.