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Finding the Fourth Proportional to 3,485.39, 4,809.15 and 1,993.79

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Solution

The fourth proportional to 3,485.39, 4,809.15 and 1,993.79 is: 2,751.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.39 : 4,809.15 = 1,993.79 : x
  2. Step 2: Convert to fraction form
    3,485.39/4,809.15 = 1,993.79/x
  3. Step 3: Cross multiply
    3,485.39x = 4,809.15 × 1,993.79
  4. Step 4: Simplify right side
    3,485.39x = 9,588,435.18
  5. Step 5: Solve for x
    x = 9,588,435.18/3,485.39
  6. Step 6: Final answer
    x = 2,751.04

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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.