Home / 3,197.80-4,785.90-2,938.60

Finding the Fourth Proportional to 3,197.80, 4,785.90 and 2,938.60

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Solution

The fourth proportional to 3,197.80, 4,785.90 and 2,938.60 is: 4,397.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.80 : 4,785.90 = 2,938.60 : x
  2. Step 2: Convert to fraction form
    3,197.80/4,785.90 = 2,938.60/x
  3. Step 3: Cross multiply
    3,197.80x = 4,785.90 × 2,938.60
  4. Step 4: Simplify right side
    3,197.80x = 14,063,845.74
  5. Step 5: Solve for x
    x = 14,063,845.74/3,197.80
  6. Step 6: Final answer
    x = 4,397.98

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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.