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Finding the Fourth Proportional to 2,908.72, 4,009.80 and 2,208.88

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Solution

The fourth proportional to 2,908.72, 4,009.80 and 2,208.88 is: 3,045.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.72 : 4,009.80 = 2,208.88 : x
  2. Step 2: Convert to fraction form
    2,908.72/4,009.80 = 2,208.88/x
  3. Step 3: Cross multiply
    2,908.72x = 4,009.80 × 2,208.88
  4. Step 4: Simplify right side
    2,908.72x = 8,857,167.02
  5. Step 5: Solve for x
    x = 8,857,167.02/2,908.72
  6. Step 6: Final answer
    x = 3,045.04

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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.