Home / 2,679.29-3,691.91-2,413.20

Finding the Fourth Proportional to 2,679.29, 3,691.91 and 2,413.20

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Solution

The fourth proportional to 2,679.29, 3,691.91 and 2,413.20 is: 3,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.29 : 3,691.91 = 2,413.20 : x
  2. Step 2: Convert to fraction form
    2,679.29/3,691.91 = 2,413.20/x
  3. Step 3: Cross multiply
    2,679.29x = 3,691.91 × 2,413.20
  4. Step 4: Simplify right side
    2,679.29x = 8,909,323.25
  5. Step 5: Solve for x
    x = 8,909,323.25/2,679.29
  6. Step 6: Final answer
    x = 3,325.26

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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.