Home / 7,042.80-10,561.60-3,144.48

Finding the Fourth Proportional to 7,042.80, 10,561.60 and 3,144.48

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Solution

The fourth proportional to 7,042.80, 10,561.60 and 3,144.48 is: 4,715.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.80 : 10,561.60 = 3,144.48 : x
  2. Step 2: Convert to fraction form
    7,042.80/10,561.60 = 3,144.48/x
  3. Step 3: Cross multiply
    7,042.80x = 10,561.60 × 3,144.48
  4. Step 4: Simplify right side
    7,042.80x = 33,210,739.97
  5. Step 5: Solve for x
    x = 33,210,739.97/7,042.80
  6. Step 6: Final answer
    x = 4,715.56

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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.