Home / 3,222.40-4,824.96-1,680.16

Finding the Fourth Proportional to 3,222.40, 4,824.96 and 1,680.16

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Solution

The fourth proportional to 3,222.40, 4,824.96 and 1,680.16 is: 2,515.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,222.40 : 4,824.96 = 1,680.16 : x
  2. Step 2: Convert to fraction form
    3,222.40/4,824.96 = 1,680.16/x
  3. Step 3: Cross multiply
    3,222.40x = 4,824.96 × 1,680.16
  4. Step 4: Simplify right side
    3,222.40x = 8,106,704.79
  5. Step 5: Solve for x
    x = 8,106,704.79/3,222.40
  6. Step 6: Final answer
    x = 2,515.74

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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.