Home / 3,999.36-5,518.20-2,506.80

Finding the Fourth Proportional to 3,999.36, 5,518.20 and 2,506.80

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Solution

The fourth proportional to 3,999.36, 5,518.20 and 2,506.80 is: 3,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.36 : 5,518.20 = 2,506.80 : x
  2. Step 2: Convert to fraction form
    3,999.36/5,518.20 = 2,506.80/x
  3. Step 3: Cross multiply
    3,999.36x = 5,518.20 × 2,506.80
  4. Step 4: Simplify right side
    3,999.36x = 13,833,023.76
  5. Step 5: Solve for x
    x = 13,833,023.76/3,999.36
  6. Step 6: Final answer
    x = 3,458.81

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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.