Home / 8,881.36-13,331.04-5,190.64

Finding the Fourth Proportional to 8,881.36, 13,331.04 and 5,190.64

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Solution

The fourth proportional to 8,881.36, 13,331.04 and 5,190.64 is: 7,791.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.36 : 13,331.04 = 5,190.64 : x
  2. Step 2: Convert to fraction form
    8,881.36/13,331.04 = 5,190.64/x
  3. Step 3: Cross multiply
    8,881.36x = 13,331.04 × 5,190.64
  4. Step 4: Simplify right side
    8,881.36x = 69,196,629.47
  5. Step 5: Solve for x
    x = 69,196,629.47/8,881.36
  6. Step 6: Final answer
    x = 7,791.22

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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.