Home / 3,090.75-4,636.53-1,359.78

Finding the Fourth Proportional to 3,090.75, 4,636.53 and 1,359.78

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Solution

The fourth proportional to 3,090.75, 4,636.53 and 1,359.78 is: 2,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.75 : 4,636.53 = 1,359.78 : x
  2. Step 2: Convert to fraction form
    3,090.75/4,636.53 = 1,359.78/x
  3. Step 3: Cross multiply
    3,090.75x = 4,636.53 × 1,359.78
  4. Step 4: Simplify right side
    3,090.75x = 6,304,660.76
  5. Step 5: Solve for x
    x = 6,304,660.76/3,090.75
  6. Step 6: Final answer
    x = 2,039.85

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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.