Home / 1,938.96-2,904.12-1,286.64

Finding the Fourth Proportional to 1,938.96, 2,904.12 and 1,286.64

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Solution

The fourth proportional to 1,938.96, 2,904.12 and 1,286.64 is: 1,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.96 : 2,904.12 = 1,286.64 : x
  2. Step 2: Convert to fraction form
    1,938.96/2,904.12 = 1,286.64/x
  3. Step 3: Cross multiply
    1,938.96x = 2,904.12 × 1,286.64
  4. Step 4: Simplify right side
    1,938.96x = 3,736,556.96
  5. Step 5: Solve for x
    x = 3,736,556.96/1,938.96
  6. Step 6: Final answer
    x = 1,927.09

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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.