Home / 1,351.22-2,026.09-426.53

Finding the Fourth Proportional to 1,351.22, 2,026.09 and 426.53

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Solution

The fourth proportional to 1,351.22, 2,026.09 and 426.53 is: 639.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.22 : 2,026.09 = 426.53 : x
  2. Step 2: Convert to fraction form
    1,351.22/2,026.09 = 426.53/x
  3. Step 3: Cross multiply
    1,351.22x = 2,026.09 × 426.53
  4. Step 4: Simplify right side
    1,351.22x = 864,193.77
  5. Step 5: Solve for x
    x = 864,193.77/1,351.22
  6. Step 6: Final answer
    x = 639.57

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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.