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Finding the Fourth Proportional to 8,626.74, 12,921.90 and 3,950.67

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Solution

The fourth proportional to 8,626.74, 12,921.90 and 3,950.67 is: 5,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.74 : 12,921.90 = 3,950.67 : x
  2. Step 2: Convert to fraction form
    8,626.74/12,921.90 = 3,950.67/x
  3. Step 3: Cross multiply
    8,626.74x = 12,921.90 × 3,950.67
  4. Step 4: Simplify right side
    8,626.74x = 51,050,162.67
  5. Step 5: Solve for x
    x = 51,050,162.67/8,626.74
  6. Step 6: Final answer
    x = 5,917.67

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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.