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Finding the Fourth Proportional to 2,956.70, 4,080.11 and 1,777.55

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Solution

The fourth proportional to 2,956.70, 4,080.11 and 1,777.55 is: 2,452.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.70 : 4,080.11 = 1,777.55 : x
  2. Step 2: Convert to fraction form
    2,956.70/4,080.11 = 1,777.55/x
  3. Step 3: Cross multiply
    2,956.70x = 4,080.11 × 1,777.55
  4. Step 4: Simplify right side
    2,956.70x = 7,252,570.24
  5. Step 5: Solve for x
    x = 7,252,570.24/2,956.70
  6. Step 6: Final answer
    x = 2,452.93

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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.