Home / 6,821.61-10,237.27-3,121.53

Finding the Fourth Proportional to 6,821.61, 10,237.27 and 3,121.53

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Solution

The fourth proportional to 6,821.61, 10,237.27 and 3,121.53 is: 4,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.61 : 10,237.27 = 3,121.53 : x
  2. Step 2: Convert to fraction form
    6,821.61/10,237.27 = 3,121.53/x
  3. Step 3: Cross multiply
    6,821.61x = 10,237.27 × 3,121.53
  4. Step 4: Simplify right side
    6,821.61x = 31,955,945.42
  5. Step 5: Solve for x
    x = 31,955,945.42/6,821.61
  6. Step 6: Final answer
    x = 4,684.52

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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.