Home / 7,140.46-10,708.97-2,755.12

Finding the Fourth Proportional to 7,140.46, 10,708.97 and 2,755.12

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Solution

The fourth proportional to 7,140.46, 10,708.97 and 2,755.12 is: 4,132.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.46 : 10,708.97 = 2,755.12 : x
  2. Step 2: Convert to fraction form
    7,140.46/10,708.97 = 2,755.12/x
  3. Step 3: Cross multiply
    7,140.46x = 10,708.97 × 2,755.12
  4. Step 4: Simplify right side
    7,140.46x = 29,504,483.65
  5. Step 5: Solve for x
    x = 29,504,483.65/7,140.46
  6. Step 6: Final answer
    x = 4,132.01

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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.