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Finding the Fourth Proportional to 9,219.44, 12,724.08 and 5,242.16

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Solution

The fourth proportional to 9,219.44, 12,724.08 and 5,242.16 is: 7,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.44 : 12,724.08 = 5,242.16 : x
  2. Step 2: Convert to fraction form
    9,219.44/12,724.08 = 5,242.16/x
  3. Step 3: Cross multiply
    9,219.44x = 12,724.08 × 5,242.16
  4. Step 4: Simplify right side
    9,219.44x = 66,701,663.21
  5. Step 5: Solve for x
    x = 66,701,663.21/9,219.44
  6. Step 6: Final answer
    x = 7,234.89

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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.