Home / 3,400.60-5,100.90-935.80

Finding the Fourth Proportional to 3,400.60, 5,100.90 and 935.80

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Solution

The fourth proportional to 3,400.60, 5,100.90 and 935.80 is: 1,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.60 : 5,100.90 = 935.80 : x
  2. Step 2: Convert to fraction form
    3,400.60/5,100.90 = 935.80/x
  3. Step 3: Cross multiply
    3,400.60x = 5,100.90 × 935.80
  4. Step 4: Simplify right side
    3,400.60x = 4,773,422.22
  5. Step 5: Solve for x
    x = 4,773,422.22/3,400.60
  6. Step 6: Final answer
    x = 1,403.70

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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.