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Finding the Fourth Proportional to 2,776.92, 4,149.12 and 2,680.08

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Solution

The fourth proportional to 2,776.92, 4,149.12 and 2,680.08 is: 4,004.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.92 : 4,149.12 = 2,680.08 : x
  2. Step 2: Convert to fraction form
    2,776.92/4,149.12 = 2,680.08/x
  3. Step 3: Cross multiply
    2,776.92x = 4,149.12 × 2,680.08
  4. Step 4: Simplify right side
    2,776.92x = 11,119,973.53
  5. Step 5: Solve for x
    x = 11,119,973.53/2,776.92
  6. Step 6: Final answer
    x = 4,004.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.