Home / 3,218.57-4,438.58-2,100.36

Finding the Fourth Proportional to 3,218.57, 4,438.58 and 2,100.36

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Solution

The fourth proportional to 3,218.57, 4,438.58 and 2,100.36 is: 2,896.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.57 : 4,438.58 = 2,100.36 : x
  2. Step 2: Convert to fraction form
    3,218.57/4,438.58 = 2,100.36/x
  3. Step 3: Cross multiply
    3,218.57x = 4,438.58 × 2,100.36
  4. Step 4: Simplify right side
    3,218.57x = 9,322,615.89
  5. Step 5: Solve for x
    x = 9,322,615.89/3,218.57
  6. Step 6: Final answer
    x = 2,896.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.