Home / 3,489.50-5,234.20-1,639.32

Finding the Fourth Proportional to 3,489.50, 5,234.20 and 1,639.32

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Solution

The fourth proportional to 3,489.50, 5,234.20 and 1,639.32 is: 2,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.50 : 5,234.20 = 1,639.32 : x
  2. Step 2: Convert to fraction form
    3,489.50/5,234.20 = 1,639.32/x
  3. Step 3: Cross multiply
    3,489.50x = 5,234.20 × 1,639.32
  4. Step 4: Simplify right side
    3,489.50x = 8,580,528.74
  5. Step 5: Solve for x
    x = 8,580,528.74/3,489.50
  6. Step 6: Final answer
    x = 2,458.96

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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.