Home / 2,135.80-3,204.60-1,405.18

Finding the Fourth Proportional to 2,135.80, 3,204.60 and 1,405.18

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Solution

The fourth proportional to 2,135.80, 3,204.60 and 1,405.18 is: 2,108.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.80 : 3,204.60 = 1,405.18 : x
  2. Step 2: Convert to fraction form
    2,135.80/3,204.60 = 1,405.18/x
  3. Step 3: Cross multiply
    2,135.80x = 3,204.60 × 1,405.18
  4. Step 4: Simplify right side
    2,135.80x = 4,503,039.83
  5. Step 5: Solve for x
    x = 4,503,039.83/2,135.80
  6. Step 6: Final answer
    x = 2,108.36

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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.