Home / 8,639.20-12,958.86-3,704.68

Finding the Fourth Proportional to 8,639.20, 12,958.86 and 3,704.68

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Solution

The fourth proportional to 8,639.20, 12,958.86 and 3,704.68 is: 5,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.20 : 12,958.86 = 3,704.68 : x
  2. Step 2: Convert to fraction form
    8,639.20/12,958.86 = 3,704.68/x
  3. Step 3: Cross multiply
    8,639.20x = 12,958.86 × 3,704.68
  4. Step 4: Simplify right side
    8,639.20x = 48,008,429.46
  5. Step 5: Solve for x
    x = 48,008,429.46/8,639.20
  6. Step 6: Final answer
    x = 5,557.05

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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.