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Finding the Fourth Proportional to 2,906.76, 4,011 and 1,647.88

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Solution

The fourth proportional to 2,906.76, 4,011 and 1,647.88 is: 2,273.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.76 : 4,011 = 1,647.88 : x
  2. Step 2: Convert to fraction form
    2,906.76/4,011 = 1,647.88/x
  3. Step 3: Cross multiply
    2,906.76x = 4,011 × 1,647.88
  4. Step 4: Simplify right side
    2,906.76x = 6,609,646.68
  5. Step 5: Solve for x
    x = 6,609,646.68/2,906.76
  6. Step 6: Final answer
    x = 2,273.89

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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.