Home / 3,090.38-4,638-1,859.18

Finding the Fourth Proportional to 3,090.38, 4,638 and 1,859.18

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Solution

The fourth proportional to 3,090.38, 4,638 and 1,859.18 is: 2,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.38 : 4,638 = 1,859.18 : x
  2. Step 2: Convert to fraction form
    3,090.38/4,638 = 1,859.18/x
  3. Step 3: Cross multiply
    3,090.38x = 4,638 × 1,859.18
  4. Step 4: Simplify right side
    3,090.38x = 8,622,876.84
  5. Step 5: Solve for x
    x = 8,622,876.84/3,090.38
  6. Step 6: Final answer
    x = 2,790.23

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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.