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Finding the Fourth Proportional to 5,077.80, 7,613.10 and 1,956.60

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Solution

The fourth proportional to 5,077.80, 7,613.10 and 1,956.60 is: 2,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.80 : 7,613.10 = 1,956.60 : x
  2. Step 2: Convert to fraction form
    5,077.80/7,613.10 = 1,956.60/x
  3. Step 3: Cross multiply
    5,077.80x = 7,613.10 × 1,956.60
  4. Step 4: Simplify right side
    5,077.80x = 14,895,791.46
  5. Step 5: Solve for x
    x = 14,895,791.46/5,077.80
  6. Step 6: Final answer
    x = 2,933.51

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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.