Home / 8,781.81-13,172.76-2,208.03

Finding the Fourth Proportional to 8,781.81, 13,172.76 and 2,208.03

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Solution

The fourth proportional to 8,781.81, 13,172.76 and 2,208.03 is: 3,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.81 : 13,172.76 = 2,208.03 : x
  2. Step 2: Convert to fraction form
    8,781.81/13,172.76 = 2,208.03/x
  3. Step 3: Cross multiply
    8,781.81x = 13,172.76 × 2,208.03
  4. Step 4: Simplify right side
    8,781.81x = 29,085,849.26
  5. Step 5: Solve for x
    x = 29,085,849.26/8,781.81
  6. Step 6: Final answer
    x = 3,312.06

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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.