Home / 8,540.36-12,811.85-3,611.31

Finding the Fourth Proportional to 8,540.36, 12,811.85 and 3,611.31

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Solution

The fourth proportional to 8,540.36, 12,811.85 and 3,611.31 is: 5,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.36 : 12,811.85 = 3,611.31 : x
  2. Step 2: Convert to fraction form
    8,540.36/12,811.85 = 3,611.31/x
  3. Step 3: Cross multiply
    8,540.36x = 12,811.85 × 3,611.31
  4. Step 4: Simplify right side
    8,540.36x = 46,267,562.02
  5. Step 5: Solve for x
    x = 46,267,562.02/8,540.36
  6. Step 6: Final answer
    x = 5,417.52

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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.