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Finding the Fourth Proportional to 3,840.40, 5,751.96 and 3,758.32

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Solution

The fourth proportional to 3,840.40, 5,751.96 and 3,758.32 is: 5,629.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.40 : 5,751.96 = 3,758.32 : x
  2. Step 2: Convert to fraction form
    3,840.40/5,751.96 = 3,758.32/x
  3. Step 3: Cross multiply
    3,840.40x = 5,751.96 × 3,758.32
  4. Step 4: Simplify right side
    3,840.40x = 21,617,706.31
  5. Step 5: Solve for x
    x = 21,617,706.31/3,840.40
  6. Step 6: Final answer
    x = 5,629.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.