Home / 7,431.90-11,149.31-2,751.95

Finding the Fourth Proportional to 7,431.90, 11,149.31 and 2,751.95

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Solution

The fourth proportional to 7,431.90, 11,149.31 and 2,751.95 is: 4,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.90 : 11,149.31 = 2,751.95 : x
  2. Step 2: Convert to fraction form
    7,431.90/11,149.31 = 2,751.95/x
  3. Step 3: Cross multiply
    7,431.90x = 11,149.31 × 2,751.95
  4. Step 4: Simplify right side
    7,431.90x = 30,682,343.65
  5. Step 5: Solve for x
    x = 30,682,343.65/7,431.90
  6. Step 6: Final answer
    x = 4,128.47

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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.