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Finding the Fourth Proportional to 2,679.70, 3,699.94 and 1,935.31

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Solution

The fourth proportional to 2,679.70, 3,699.94 and 1,935.31 is: 2,672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.70 : 3,699.94 = 1,935.31 : x
  2. Step 2: Convert to fraction form
    2,679.70/3,699.94 = 1,935.31/x
  3. Step 3: Cross multiply
    2,679.70x = 3,699.94 × 1,935.31
  4. Step 4: Simplify right side
    2,679.70x = 7,160,512.38
  5. Step 5: Solve for x
    x = 7,160,512.38/2,679.70
  6. Step 6: Final answer
    x = 2,672.14

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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.