Home / 2,135.15-3,203.21-836.63

Finding the Fourth Proportional to 2,135.15, 3,203.21 and 836.63

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Solution

The fourth proportional to 2,135.15, 3,203.21 and 836.63 is: 1,255.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.15 : 3,203.21 = 836.63 : x
  2. Step 2: Convert to fraction form
    2,135.15/3,203.21 = 836.63/x
  3. Step 3: Cross multiply
    2,135.15x = 3,203.21 × 836.63
  4. Step 4: Simplify right side
    2,135.15x = 2,679,887.66
  5. Step 5: Solve for x
    x = 2,679,887.66/2,135.15
  6. Step 6: Final answer
    x = 1,255.13

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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.