Home / 7,140.44-10,712.23-2,142.61

Finding the Fourth Proportional to 7,140.44, 10,712.23 and 2,142.61

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Solution

The fourth proportional to 7,140.44, 10,712.23 and 2,142.61 is: 3,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.44 : 10,712.23 = 2,142.61 : x
  2. Step 2: Convert to fraction form
    7,140.44/10,712.23 = 2,142.61/x
  3. Step 3: Cross multiply
    7,140.44x = 10,712.23 × 2,142.61
  4. Step 4: Simplify right side
    7,140.44x = 22,952,131.12
  5. Step 5: Solve for x
    x = 22,952,131.12/7,140.44
  6. Step 6: Final answer
    x = 3,214.39

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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.