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Finding the Fourth Proportional to 6,822.20, 10,225.20 and 6,125.60

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Solution

The fourth proportional to 6,822.20, 10,225.20 and 6,125.60 is: 9,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,822.20 : 10,225.20 = 6,125.60 : x
  2. Step 2: Convert to fraction form
    6,822.20/10,225.20 = 6,125.60/x
  3. Step 3: Cross multiply
    6,822.20x = 10,225.20 × 6,125.60
  4. Step 4: Simplify right side
    6,822.20x = 62,635,485.12
  5. Step 5: Solve for x
    x = 62,635,485.12/6,822.20
  6. Step 6: Final answer
    x = 9,181.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.