Home / 2,836.21-4,254.19-861.77

Finding the Fourth Proportional to 2,836.21, 4,254.19 and 861.77

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Solution

The fourth proportional to 2,836.21, 4,254.19 and 861.77 is: 1,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.21 : 4,254.19 = 861.77 : x
  2. Step 2: Convert to fraction form
    2,836.21/4,254.19 = 861.77/x
  3. Step 3: Cross multiply
    2,836.21x = 4,254.19 × 861.77
  4. Step 4: Simplify right side
    2,836.21x = 3,666,109.89
  5. Step 5: Solve for x
    x = 3,666,109.89/2,836.21
  6. Step 6: Final answer
    x = 1,292.61

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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.