Home / 7,314.24-10,971.80-2,120.52

Finding the Fourth Proportional to 7,314.24, 10,971.80 and 2,120.52

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Solution

The fourth proportional to 7,314.24, 10,971.80 and 2,120.52 is: 3,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314.24 : 10,971.80 = 2,120.52 : x
  2. Step 2: Convert to fraction form
    7,314.24/10,971.80 = 2,120.52/x
  3. Step 3: Cross multiply
    7,314.24x = 10,971.80 × 2,120.52
  4. Step 4: Simplify right side
    7,314.24x = 23,265,921.34
  5. Step 5: Solve for x
    x = 23,265,921.34/7,314.24
  6. Step 6: Final answer
    x = 3,180.91

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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.