Home / 8,781.36-13,173.84-2,938.02

Finding the Fourth Proportional to 8,781.36, 13,173.84 and 2,938.02

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Solution

The fourth proportional to 8,781.36, 13,173.84 and 2,938.02 is: 4,407.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.36 : 13,173.84 = 2,938.02 : x
  2. Step 2: Convert to fraction form
    8,781.36/13,173.84 = 2,938.02/x
  3. Step 3: Cross multiply
    8,781.36x = 13,173.84 × 2,938.02
  4. Step 4: Simplify right side
    8,781.36x = 38,705,005.40
  5. Step 5: Solve for x
    x = 38,705,005.40/8,781.36
  6. Step 6: Final answer
    x = 4,407.63

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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.