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Finding the Fourth Proportional to 6,999.72, 10,500.12 and 5,173.44

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Solution

The fourth proportional to 6,999.72, 10,500.12 and 5,173.44 is: 7,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.72 : 10,500.12 = 5,173.44 : x
  2. Step 2: Convert to fraction form
    6,999.72/10,500.12 = 5,173.44/x
  3. Step 3: Cross multiply
    6,999.72x = 10,500.12 × 5,173.44
  4. Step 4: Simplify right side
    6,999.72x = 54,321,740.81
  5. Step 5: Solve for x
    x = 54,321,740.81/6,999.72
  6. Step 6: Final answer
    x = 7,760.56

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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.