Home / 3,817.20-5,267.58-2,138.58

Finding the Fourth Proportional to 3,817.20, 5,267.58 and 2,138.58

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Solution

The fourth proportional to 3,817.20, 5,267.58 and 2,138.58 is: 2,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,817.20 : 5,267.58 = 2,138.58 : x
  2. Step 2: Convert to fraction form
    3,817.20/5,267.58 = 2,138.58/x
  3. Step 3: Cross multiply
    3,817.20x = 5,267.58 × 2,138.58
  4. Step 4: Simplify right side
    3,817.20x = 11,265,141.24
  5. Step 5: Solve for x
    x = 11,265,141.24/3,817.20
  6. Step 6: Final answer
    x = 2,951.15

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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.