Home / 1,361.20-2,042.10-539.26

Finding the Fourth Proportional to 1,361.20, 2,042.10 and 539.26

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Solution

The fourth proportional to 1,361.20, 2,042.10 and 539.26 is: 809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.20 : 2,042.10 = 539.26 : x
  2. Step 2: Convert to fraction form
    1,361.20/2,042.10 = 539.26/x
  3. Step 3: Cross multiply
    1,361.20x = 2,042.10 × 539.26
  4. Step 4: Simplify right side
    1,361.20x = 1,101,222.85
  5. Step 5: Solve for x
    x = 1,101,222.85/1,361.20
  6. Step 6: Final answer
    x = 809.01

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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.