Home / 8,971.35-13,445.94-3,121.14

Finding the Fourth Proportional to 8,971.35, 13,445.94 and 3,121.14

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Solution

The fourth proportional to 8,971.35, 13,445.94 and 3,121.14 is: 4,677.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.35 : 13,445.94 = 3,121.14 : x
  2. Step 2: Convert to fraction form
    8,971.35/13,445.94 = 3,121.14/x
  3. Step 3: Cross multiply
    8,971.35x = 13,445.94 × 3,121.14
  4. Step 4: Simplify right side
    8,971.35x = 41,966,661.17
  5. Step 5: Solve for x
    x = 41,966,661.17/8,971.35
  6. Step 6: Final answer
    x = 4,677.85

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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.