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Finding the Fourth Proportional to 3,855.32, 5,319.10 and 2,361.68

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Solution

The fourth proportional to 3,855.32, 5,319.10 and 2,361.68 is: 3,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.32 : 5,319.10 = 2,361.68 : x
  2. Step 2: Convert to fraction form
    3,855.32/5,319.10 = 2,361.68/x
  3. Step 3: Cross multiply
    3,855.32x = 5,319.10 × 2,361.68
  4. Step 4: Simplify right side
    3,855.32x = 12,562,012.09
  5. Step 5: Solve for x
    x = 12,562,012.09/3,855.32
  6. Step 6: Final answer
    x = 3,258.36

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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.