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Finding the Fourth Proportional to 7,939.71, 10,958.94 and 4,953.78

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Solution

The fourth proportional to 7,939.71, 10,958.94 and 4,953.78 is: 6,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.71 : 10,958.94 = 4,953.78 : x
  2. Step 2: Convert to fraction form
    7,939.71/10,958.94 = 4,953.78/x
  3. Step 3: Cross multiply
    7,939.71x = 10,958.94 × 4,953.78
  4. Step 4: Simplify right side
    7,939.71x = 54,288,177.79
  5. Step 5: Solve for x
    x = 54,288,177.79/7,939.71
  6. Step 6: Final answer
    x = 6,837.55

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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.