Home / 3,215.15-4,820.21-1,268.81

Finding the Fourth Proportional to 3,215.15, 4,820.21 and 1,268.81

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Solution

The fourth proportional to 3,215.15, 4,820.21 and 1,268.81 is: 1,902.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.15 : 4,820.21 = 1,268.81 : x
  2. Step 2: Convert to fraction form
    3,215.15/4,820.21 = 1,268.81/x
  3. Step 3: Cross multiply
    3,215.15x = 4,820.21 × 1,268.81
  4. Step 4: Simplify right side
    3,215.15x = 6,115,924.31
  5. Step 5: Solve for x
    x = 6,115,924.31/3,215.15
  6. Step 6: Final answer
    x = 1,902.22

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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.