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Finding the Fourth Proportional to 6,138.30, 8,610.90 and 6,138.30

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Solution

The fourth proportional to 6,138.30, 8,610.90 and 6,138.30 is: 8,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.30 : 8,610.90 = 6,138.30 : x
  2. Step 2: Convert to fraction form
    6,138.30/8,610.90 = 6,138.30/x
  3. Step 3: Cross multiply
    6,138.30x = 8,610.90 × 6,138.30
  4. Step 4: Simplify right side
    6,138.30x = 52,856,287.47
  5. Step 5: Solve for x
    x = 52,856,287.47/6,138.30
  6. Step 6: Final answer
    x = 8,610.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.