Home / 1,935.66-2,902.29-636.78

Finding the Fourth Proportional to 1,935.66, 2,902.29 and 636.78

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Solution

The fourth proportional to 1,935.66, 2,902.29 and 636.78 is: 954.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.66 : 2,902.29 = 636.78 : x
  2. Step 2: Convert to fraction form
    1,935.66/2,902.29 = 636.78/x
  3. Step 3: Cross multiply
    1,935.66x = 2,902.29 × 636.78
  4. Step 4: Simplify right side
    1,935.66x = 1,848,120.23
  5. Step 5: Solve for x
    x = 1,848,120.23/1,935.66
  6. Step 6: Final answer
    x = 954.78

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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.