Home / 7,140.53-10,704.62-2,761.06

Finding the Fourth Proportional to 7,140.53, 10,704.62 and 2,761.06

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Solution

The fourth proportional to 7,140.53, 10,704.62 and 2,761.06 is: 4,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.53 : 10,704.62 = 2,761.06 : x
  2. Step 2: Convert to fraction form
    7,140.53/10,704.62 = 2,761.06/x
  3. Step 3: Cross multiply
    7,140.53x = 10,704.62 × 2,761.06
  4. Step 4: Simplify right side
    7,140.53x = 29,556,044.57
  5. Step 5: Solve for x
    x = 29,556,044.57/7,140.53
  6. Step 6: Final answer
    x = 4,139.20

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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.