Home / 3,126.02-4,319.62-2,974.20

Finding the Fourth Proportional to 3,126.02, 4,319.62 and 2,974.20

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Solution

The fourth proportional to 3,126.02, 4,319.62 and 2,974.20 is: 4,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.02 : 4,319.62 = 2,974.20 : x
  2. Step 2: Convert to fraction form
    3,126.02/4,319.62 = 2,974.20/x
  3. Step 3: Cross multiply
    3,126.02x = 4,319.62 × 2,974.20
  4. Step 4: Simplify right side
    3,126.02x = 12,847,413.80
  5. Step 5: Solve for x
    x = 12,847,413.80/3,126.02
  6. Step 6: Final answer
    x = 4,109.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.