Home / 3,999.81-5,517.35-2,505.13

Finding the Fourth Proportional to 3,999.81, 5,517.35 and 2,505.13

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Solution

The fourth proportional to 3,999.81, 5,517.35 and 2,505.13 is: 3,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.81 : 5,517.35 = 2,505.13 : x
  2. Step 2: Convert to fraction form
    3,999.81/5,517.35 = 2,505.13/x
  3. Step 3: Cross multiply
    3,999.81x = 5,517.35 × 2,505.13
  4. Step 4: Simplify right side
    3,999.81x = 13,821,685.27
  5. Step 5: Solve for x
    x = 13,821,685.27/3,999.81
  6. Step 6: Final answer
    x = 3,455.59

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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.