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Finding the Fourth Proportional to 5,178.42, 7,176.42 and 5,079.96

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Solution

The fourth proportional to 5,178.42, 7,176.42 and 5,079.96 is: 7,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.42 : 7,176.42 = 5,079.96 : x
  2. Step 2: Convert to fraction form
    5,178.42/7,176.42 = 5,079.96/x
  3. Step 3: Cross multiply
    5,178.42x = 7,176.42 × 5,079.96
  4. Step 4: Simplify right side
    5,178.42x = 36,455,926.54
  5. Step 5: Solve for x
    x = 36,455,926.54/5,178.42
  6. Step 6: Final answer
    x = 7,039.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.