Home / 8,408.91-12,615.30-3,903.69

Finding the Fourth Proportional to 8,408.91, 12,615.30 and 3,903.69

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Solution

The fourth proportional to 8,408.91, 12,615.30 and 3,903.69 is: 5,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.91 : 12,615.30 = 3,903.69 : x
  2. Step 2: Convert to fraction form
    8,408.91/12,615.30 = 3,903.69/x
  3. Step 3: Cross multiply
    8,408.91x = 12,615.30 × 3,903.69
  4. Step 4: Simplify right side
    8,408.91x = 49,246,220.46
  5. Step 5: Solve for x
    x = 49,246,220.46/8,408.91
  6. Step 6: Final answer
    x = 5,856.43

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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.