Home / 5,413.48-8,115.42-2,638.60

Finding the Fourth Proportional to 5,413.48, 8,115.42 and 2,638.60

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Solution

The fourth proportional to 5,413.48, 8,115.42 and 2,638.60 is: 3,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.48 : 8,115.42 = 2,638.60 : x
  2. Step 2: Convert to fraction form
    5,413.48/8,115.42 = 2,638.60/x
  3. Step 3: Cross multiply
    5,413.48x = 8,115.42 × 2,638.60
  4. Step 4: Simplify right side
    5,413.48x = 21,413,347.21
  5. Step 5: Solve for x
    x = 21,413,347.21/5,413.48
  6. Step 6: Final answer
    x = 3,955.56

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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.