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Finding the Fourth Proportional to 6,442.54, 8,889.62 and 3,754.20

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Solution

The fourth proportional to 6,442.54, 8,889.62 and 3,754.20 is: 5,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.54 : 8,889.62 = 3,754.20 : x
  2. Step 2: Convert to fraction form
    6,442.54/8,889.62 = 3,754.20/x
  3. Step 3: Cross multiply
    6,442.54x = 8,889.62 × 3,754.20
  4. Step 4: Simplify right side
    6,442.54x = 33,373,375.96
  5. Step 5: Solve for x
    x = 33,373,375.96/6,442.54
  6. Step 6: Final answer
    x = 5,180.16

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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.