Home / 3,101.72-4,267.68-2,680.72

Finding the Fourth Proportional to 3,101.72, 4,267.68 and 2,680.72

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Solution

The fourth proportional to 3,101.72, 4,267.68 and 2,680.72 is: 3,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.72 : 4,267.68 = 2,680.72 : x
  2. Step 2: Convert to fraction form
    3,101.72/4,267.68 = 2,680.72/x
  3. Step 3: Cross multiply
    3,101.72x = 4,267.68 × 2,680.72
  4. Step 4: Simplify right side
    3,101.72x = 11,440,455.13
  5. Step 5: Solve for x
    x = 11,440,455.13/3,101.72
  6. Step 6: Final answer
    x = 3,688.42

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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.