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Finding the Fourth Proportional to 3,656.79, 5,487.62 and 3,413.79

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Solution

The fourth proportional to 3,656.79, 5,487.62 and 3,413.79 is: 5,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.79 : 5,487.62 = 3,413.79 : x
  2. Step 2: Convert to fraction form
    3,656.79/5,487.62 = 3,413.79/x
  3. Step 3: Cross multiply
    3,656.79x = 5,487.62 × 3,413.79
  4. Step 4: Simplify right side
    3,656.79x = 18,733,565.21
  5. Step 5: Solve for x
    x = 18,733,565.21/3,656.79
  6. Step 6: Final answer
    x = 5,122.95

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1.5x scale

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.