Home / 2,621.90-3,619.90-1,628.64

Finding the Fourth Proportional to 2,621.90, 3,619.90 and 1,628.64

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Solution

The fourth proportional to 2,621.90, 3,619.90 and 1,628.64 is: 2,248.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.90 : 3,619.90 = 1,628.64 : x
  2. Step 2: Convert to fraction form
    2,621.90/3,619.90 = 1,628.64/x
  3. Step 3: Cross multiply
    2,621.90x = 3,619.90 × 1,628.64
  4. Step 4: Simplify right side
    2,621.90x = 5,895,513.94
  5. Step 5: Solve for x
    x = 5,895,513.94/2,621.90
  6. Step 6: Final answer
    x = 2,248.57

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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.