Home / 1,351.07-2,026.78-426.50

Finding the Fourth Proportional to 1,351.07, 2,026.78 and 426.50

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Solution

The fourth proportional to 1,351.07, 2,026.78 and 426.50 is: 639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.07 : 2,026.78 = 426.50 : x
  2. Step 2: Convert to fraction form
    1,351.07/2,026.78 = 426.50/x
  3. Step 3: Cross multiply
    1,351.07x = 2,026.78 × 426.50
  4. Step 4: Simplify right side
    1,351.07x = 864,413.57
  5. Step 5: Solve for x
    x = 864,413.57/1,351.07
  6. Step 6: Final answer
    x = 639.80

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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.