Home / 3,205.62-4,416.88-2,155.86

Finding the Fourth Proportional to 3,205.62, 4,416.88 and 2,155.86

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Solution

The fourth proportional to 3,205.62, 4,416.88 and 2,155.86 is: 2,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.62 : 4,416.88 = 2,155.86 : x
  2. Step 2: Convert to fraction form
    3,205.62/4,416.88 = 2,155.86/x
  3. Step 3: Cross multiply
    3,205.62x = 4,416.88 × 2,155.86
  4. Step 4: Simplify right side
    3,205.62x = 9,522,174.92
  5. Step 5: Solve for x
    x = 9,522,174.92/3,205.62
  6. Step 6: Final answer
    x = 2,970.46

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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.