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Finding the Fourth Proportional to 3,564.54, 4,920.44 and 3,190.86

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Solution

The fourth proportional to 3,564.54, 4,920.44 and 3,190.86 is: 4,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,564.54 : 4,920.44 = 3,190.86 : x
  2. Step 2: Convert to fraction form
    3,564.54/4,920.44 = 3,190.86/x
  3. Step 3: Cross multiply
    3,564.54x = 4,920.44 × 3,190.86
  4. Step 4: Simplify right side
    3,564.54x = 15,700,435.18
  5. Step 5: Solve for x
    x = 15,700,435.18/3,564.54
  6. Step 6: Final answer
    x = 4,404.62

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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.