Home / 2,408.90-3,320.43-1,621.58

Finding the Fourth Proportional to 2,408.90, 3,320.43 and 1,621.58

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Solution

The fourth proportional to 2,408.90, 3,320.43 and 1,621.58 is: 2,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.90 : 3,320.43 = 1,621.58 : x
  2. Step 2: Convert to fraction form
    2,408.90/3,320.43 = 1,621.58/x
  3. Step 3: Cross multiply
    2,408.90x = 3,320.43 × 1,621.58
  4. Step 4: Simplify right side
    2,408.90x = 5,384,326.28
  5. Step 5: Solve for x
    x = 5,384,326.28/2,408.90
  6. Step 6: Final answer
    x = 2,235.19

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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.