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Finding the Fourth Proportional to 2,777.73, 4,168.65 and 1,316.88

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Solution

The fourth proportional to 2,777.73, 4,168.65 and 1,316.88 is: 1,976.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.73 : 4,168.65 = 1,316.88 : x
  2. Step 2: Convert to fraction form
    2,777.73/4,168.65 = 1,316.88/x
  3. Step 3: Cross multiply
    2,777.73x = 4,168.65 × 1,316.88
  4. Step 4: Simplify right side
    2,777.73x = 5,489,611.81
  5. Step 5: Solve for x
    x = 5,489,611.81/2,777.73
  6. Step 6: Final answer
    x = 1,976.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.