Home / 3,838.20-5,297.18-2,159.67

Finding the Fourth Proportional to 3,838.20, 5,297.18 and 2,159.67

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Solution

The fourth proportional to 3,838.20, 5,297.18 and 2,159.67 is: 2,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.20 : 5,297.18 = 2,159.67 : x
  2. Step 2: Convert to fraction form
    3,838.20/5,297.18 = 2,159.67/x
  3. Step 3: Cross multiply
    3,838.20x = 5,297.18 × 2,159.67
  4. Step 4: Simplify right side
    3,838.20x = 11,440,160.73
  5. Step 5: Solve for x
    x = 11,440,160.73/3,838.20
  6. Step 6: Final answer
    x = 2,980.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.