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Finding the Fourth Proportional to 3,600.78, 5,398.40 and 3,234.46

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Solution

The fourth proportional to 3,600.78, 5,398.40 and 3,234.46 is: 4,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.78 : 5,398.40 = 3,234.46 : x
  2. Step 2: Convert to fraction form
    3,600.78/5,398.40 = 3,234.46/x
  3. Step 3: Cross multiply
    3,600.78x = 5,398.40 × 3,234.46
  4. Step 4: Simplify right side
    3,600.78x = 17,460,908.86
  5. Step 5: Solve for x
    x = 17,460,908.86/3,600.78
  6. Step 6: Final answer
    x = 4,849.20

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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.