Home / 8,371.82-12,557.85-3,989.74

Finding the Fourth Proportional to 8,371.82, 12,557.85 and 3,989.74

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Solution

The fourth proportional to 8,371.82, 12,557.85 and 3,989.74 is: 5,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.82 : 12,557.85 = 3,989.74 : x
  2. Step 2: Convert to fraction form
    8,371.82/12,557.85 = 3,989.74/x
  3. Step 3: Cross multiply
    8,371.82x = 12,557.85 × 3,989.74
  4. Step 4: Simplify right side
    8,371.82x = 50,102,556.46
  5. Step 5: Solve for x
    x = 50,102,556.46/8,371.82
  6. Step 6: Final answer
    x = 5,984.67

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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.