Home / 1,361.11-2,041.83-387.29

Finding the Fourth Proportional to 1,361.11, 2,041.83 and 387.29

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Solution

The fourth proportional to 1,361.11, 2,041.83 and 387.29 is: 580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.11 : 2,041.83 = 387.29 : x
  2. Step 2: Convert to fraction form
    1,361.11/2,041.83 = 387.29/x
  3. Step 3: Cross multiply
    1,361.11x = 2,041.83 × 387.29
  4. Step 4: Simplify right side
    1,361.11x = 790,770.13
  5. Step 5: Solve for x
    x = 790,770.13/1,361.11
  6. Step 6: Final answer
    x = 580.98

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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.