Home / 8,413.28-12,621.44-5,657.60

Finding the Fourth Proportional to 8,413.28, 12,621.44 and 5,657.60

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Solution

The fourth proportional to 8,413.28, 12,621.44 and 5,657.60 is: 8,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.28 : 12,621.44 = 5,657.60 : x
  2. Step 2: Convert to fraction form
    8,413.28/12,621.44 = 5,657.60/x
  3. Step 3: Cross multiply
    8,413.28x = 12,621.44 × 5,657.60
  4. Step 4: Simplify right side
    8,413.28x = 71,407,058.94
  5. Step 5: Solve for x
    x = 71,407,058.94/8,413.28
  6. Step 6: Final answer
    x = 8,487.42

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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.