Home / 5,131.02-7,708.05-2,821.26

Finding the Fourth Proportional to 5,131.02, 7,708.05 and 2,821.26

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Solution

The fourth proportional to 5,131.02, 7,708.05 and 2,821.26 is: 4,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.02 : 7,708.05 = 2,821.26 : x
  2. Step 2: Convert to fraction form
    5,131.02/7,708.05 = 2,821.26/x
  3. Step 3: Cross multiply
    5,131.02x = 7,708.05 × 2,821.26
  4. Step 4: Simplify right side
    5,131.02x = 21,746,413.14
  5. Step 5: Solve for x
    x = 21,746,413.14/5,131.02
  6. Step 6: Final answer
    x = 4,238.22

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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.