Home / 3,618.48-5,413.80-3,609.20

Finding the Fourth Proportional to 3,618.48, 5,413.80 and 3,609.20

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Solution

The fourth proportional to 3,618.48, 5,413.80 and 3,609.20 is: 5,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.48 : 5,413.80 = 3,609.20 : x
  2. Step 2: Convert to fraction form
    3,618.48/5,413.80 = 3,609.20/x
  3. Step 3: Cross multiply
    3,618.48x = 5,413.80 × 3,609.20
  4. Step 4: Simplify right side
    3,618.48x = 19,539,486.96
  5. Step 5: Solve for x
    x = 19,539,486.96/3,618.48
  6. Step 6: Final answer
    x = 5,399.92

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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.