Home / 1,342.26-2,012.60-520.43

Finding the Fourth Proportional to 1,342.26, 2,012.60 and 520.43

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Solution

The fourth proportional to 1,342.26, 2,012.60 and 520.43 is: 780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.26 : 2,012.60 = 520.43 : x
  2. Step 2: Convert to fraction form
    1,342.26/2,012.60 = 520.43/x
  3. Step 3: Cross multiply
    1,342.26x = 2,012.60 × 520.43
  4. Step 4: Simplify right side
    1,342.26x = 1,047,408.66
  5. Step 5: Solve for x
    x = 1,047,408.66/1,342.26
  6. Step 6: Final answer
    x = 780.33

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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.