Home / 5,413.60-8,120.49-1,715.86

Finding the Fourth Proportional to 5,413.60, 8,120.49 and 1,715.86

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Solution

The fourth proportional to 5,413.60, 8,120.49 and 1,715.86 is: 2,573.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.60 : 8,120.49 = 1,715.86 : x
  2. Step 2: Convert to fraction form
    5,413.60/8,120.49 = 1,715.86/x
  3. Step 3: Cross multiply
    5,413.60x = 8,120.49 × 1,715.86
  4. Step 4: Simplify right side
    5,413.60x = 13,933,623.97
  5. Step 5: Solve for x
    x = 13,933,623.97/5,413.60
  6. Step 6: Final answer
    x = 2,573.82

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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.