Home / 3,210.52-4,815-1,361.68

Finding the Fourth Proportional to 3,210.52, 4,815 and 1,361.68

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Solution

The fourth proportional to 3,210.52, 4,815 and 1,361.68 is: 2,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.52 : 4,815 = 1,361.68 : x
  2. Step 2: Convert to fraction form
    3,210.52/4,815 = 1,361.68/x
  3. Step 3: Cross multiply
    3,210.52x = 4,815 × 1,361.68
  4. Step 4: Simplify right side
    3,210.52x = 6,556,489.20
  5. Step 5: Solve for x
    x = 6,556,489.20/3,210.52
  6. Step 6: Final answer
    x = 2,042.19

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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.