Home / 2,938.77-4,405.28-1,208.61

Finding the Fourth Proportional to 2,938.77, 4,405.28 and 1,208.61

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Solution

The fourth proportional to 2,938.77, 4,405.28 and 1,208.61 is: 1,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.77 : 4,405.28 = 1,208.61 : x
  2. Step 2: Convert to fraction form
    2,938.77/4,405.28 = 1,208.61/x
  3. Step 3: Cross multiply
    2,938.77x = 4,405.28 × 1,208.61
  4. Step 4: Simplify right side
    2,938.77x = 5,324,259.42
  5. Step 5: Solve for x
    x = 5,324,259.42/2,938.77
  6. Step 6: Final answer
    x = 1,811.73

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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.