Home / 3,322.42-4,986.70-1,680.12

Finding the Fourth Proportional to 3,322.42, 4,986.70 and 1,680.12

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Solution

The fourth proportional to 3,322.42, 4,986.70 and 1,680.12 is: 2,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.42 : 4,986.70 = 1,680.12 : x
  2. Step 2: Convert to fraction form
    3,322.42/4,986.70 = 1,680.12/x
  3. Step 3: Cross multiply
    3,322.42x = 4,986.70 × 1,680.12
  4. Step 4: Simplify right side
    3,322.42x = 8,378,254.40
  5. Step 5: Solve for x
    x = 8,378,254.40/3,322.42
  6. Step 6: Final answer
    x = 2,521.73

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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.