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Finding the Fourth Proportional to 7,938.71, 11,908.65 and 2,673.70

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Solution

The fourth proportional to 7,938.71, 11,908.65 and 2,673.70 is: 4,010.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.71 : 11,908.65 = 2,673.70 : x
  2. Step 2: Convert to fraction form
    7,938.71/11,908.65 = 2,673.70/x
  3. Step 3: Cross multiply
    7,938.71x = 11,908.65 × 2,673.70
  4. Step 4: Simplify right side
    7,938.71x = 31,840,157.51
  5. Step 5: Solve for x
    x = 31,840,157.51/7,938.71
  6. Step 6: Final answer
    x = 4,010.75

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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.