Home / 3,485.90-4,810.79-1,993.78

Finding the Fourth Proportional to 3,485.90, 4,810.79 and 1,993.78

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Solution

The fourth proportional to 3,485.90, 4,810.79 and 1,993.78 is: 2,751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.90 : 4,810.79 = 1,993.78 : x
  2. Step 2: Convert to fraction form
    3,485.90/4,810.79 = 1,993.78/x
  3. Step 3: Cross multiply
    3,485.90x = 4,810.79 × 1,993.78
  4. Step 4: Simplify right side
    3,485.90x = 9,591,656.89
  5. Step 5: Solve for x
    x = 9,591,656.89/3,485.90
  6. Step 6: Final answer
    x = 2,751.56

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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.