Home / 3,906.21-5,859.91-1,685.67

Finding the Fourth Proportional to 3,906.21, 5,859.91 and 1,685.67

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Solution

The fourth proportional to 3,906.21, 5,859.91 and 1,685.67 is: 2,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.21 : 5,859.91 = 1,685.67 : x
  2. Step 2: Convert to fraction form
    3,906.21/5,859.91 = 1,685.67/x
  3. Step 3: Cross multiply
    3,906.21x = 5,859.91 × 1,685.67
  4. Step 4: Simplify right side
    3,906.21x = 9,877,874.49
  5. Step 5: Solve for x
    x = 9,877,874.49/3,906.21
  6. Step 6: Final answer
    x = 2,528.76

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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.