Home / 7,314.68-10,971.84-2,120.60

Finding the Fourth Proportional to 7,314.68, 10,971.84 and 2,120.60

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Solution

The fourth proportional to 7,314.68, 10,971.84 and 2,120.60 is: 3,180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314.68 : 10,971.84 = 2,120.60 : x
  2. Step 2: Convert to fraction form
    7,314.68/10,971.84 = 2,120.60/x
  3. Step 3: Cross multiply
    7,314.68x = 10,971.84 × 2,120.60
  4. Step 4: Simplify right side
    7,314.68x = 23,266,883.90
  5. Step 5: Solve for x
    x = 23,266,883.90/7,314.68
  6. Step 6: Final answer
    x = 3,180.85

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1.5x scale

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.