Home / 8,439.68-12,659.94-3,508.80

Finding the Fourth Proportional to 8,439.68, 12,659.94 and 3,508.80

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Solution

The fourth proportional to 8,439.68, 12,659.94 and 3,508.80 is: 5,263.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.68 : 12,659.94 = 3,508.80 : x
  2. Step 2: Convert to fraction form
    8,439.68/12,659.94 = 3,508.80/x
  3. Step 3: Cross multiply
    8,439.68x = 12,659.94 × 3,508.80
  4. Step 4: Simplify right side
    8,439.68x = 44,421,197.47
  5. Step 5: Solve for x
    x = 44,421,197.47/8,439.68
  6. Step 6: Final answer
    x = 5,263.37

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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.