Home / 1,246.96-1,869.78-381.04

Finding the Fourth Proportional to 1,246.96, 1,869.78 and 381.04

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Solution

The fourth proportional to 1,246.96, 1,869.78 and 381.04 is: 571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.96 : 1,869.78 = 381.04 : x
  2. Step 2: Convert to fraction form
    1,246.96/1,869.78 = 381.04/x
  3. Step 3: Cross multiply
    1,246.96x = 1,869.78 × 381.04
  4. Step 4: Simplify right side
    1,246.96x = 712,460.97
  5. Step 5: Solve for x
    x = 712,460.97/1,246.96
  6. Step 6: Final answer
    x = 571.36

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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.