Home / 8,720.26-13,078.67-4,276.02

Finding the Fourth Proportional to 8,720.26, 13,078.67 and 4,276.02

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Solution

The fourth proportional to 8,720.26, 13,078.67 and 4,276.02 is: 6,413.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.26 : 13,078.67 = 4,276.02 : x
  2. Step 2: Convert to fraction form
    8,720.26/13,078.67 = 4,276.02/x
  3. Step 3: Cross multiply
    8,720.26x = 13,078.67 × 4,276.02
  4. Step 4: Simplify right side
    8,720.26x = 55,924,571.81
  5. Step 5: Solve for x
    x = 55,924,571.81/8,720.26
  6. Step 6: Final answer
    x = 6,413.18

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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.