Home / 8,109.32-12,161-3,948.08

Finding the Fourth Proportional to 8,109.32, 12,161 and 3,948.08

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Solution

The fourth proportional to 8,109.32, 12,161 and 3,948.08 is: 5,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.32 : 12,161 = 3,948.08 : x
  2. Step 2: Convert to fraction form
    8,109.32/12,161 = 3,948.08/x
  3. Step 3: Cross multiply
    8,109.32x = 12,161 × 3,948.08
  4. Step 4: Simplify right side
    8,109.32x = 48,012,600.88
  5. Step 5: Solve for x
    x = 48,012,600.88/8,109.32
  6. Step 6: Final answer
    x = 5,920.67

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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.