Home / 5,413.67-8,120.53-1,715.90

Finding the Fourth Proportional to 5,413.67, 8,120.53 and 1,715.90

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Solution

The fourth proportional to 5,413.67, 8,120.53 and 1,715.90 is: 2,573.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.67 : 8,120.53 = 1,715.90 : x
  2. Step 2: Convert to fraction form
    5,413.67/8,120.53 = 1,715.90/x
  3. Step 3: Cross multiply
    5,413.67x = 8,120.53 × 1,715.90
  4. Step 4: Simplify right side
    5,413.67x = 13,934,017.43
  5. Step 5: Solve for x
    x = 13,934,017.43/5,413.67
  6. Step 6: Final answer
    x = 2,573.86

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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.