Home / 2,408.32-3,320.40-1,620.64

Finding the Fourth Proportional to 2,408.32, 3,320.40 and 1,620.64

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Solution

The fourth proportional to 2,408.32, 3,320.40 and 1,620.64 is: 2,234.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.32 : 3,320.40 = 1,620.64 : x
  2. Step 2: Convert to fraction form
    2,408.32/3,320.40 = 1,620.64/x
  3. Step 3: Cross multiply
    2,408.32x = 3,320.40 × 1,620.64
  4. Step 4: Simplify right side
    2,408.32x = 5,381,173.06
  5. Step 5: Solve for x
    x = 5,381,173.06/2,408.32
  6. Step 6: Final answer
    x = 2,234.41

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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.