Home / 7,142.64-10,711.80-3,442.56

Finding the Fourth Proportional to 7,142.64, 10,711.80 and 3,442.56

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Solution

The fourth proportional to 7,142.64, 10,711.80 and 3,442.56 is: 5,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.64 : 10,711.80 = 3,442.56 : x
  2. Step 2: Convert to fraction form
    7,142.64/10,711.80 = 3,442.56/x
  3. Step 3: Cross multiply
    7,142.64x = 10,711.80 × 3,442.56
  4. Step 4: Simplify right side
    7,142.64x = 36,876,014.21
  5. Step 5: Solve for x
    x = 36,876,014.21/7,142.64
  6. Step 6: Final answer
    x = 5,162.80

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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.