Home / 8,102.94-12,145.77-3,421.98

Finding the Fourth Proportional to 8,102.94, 12,145.77 and 3,421.98

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Solution

The fourth proportional to 8,102.94, 12,145.77 and 3,421.98 is: 5,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.94 : 12,145.77 = 3,421.98 : x
  2. Step 2: Convert to fraction form
    8,102.94/12,145.77 = 3,421.98/x
  3. Step 3: Cross multiply
    8,102.94x = 12,145.77 × 3,421.98
  4. Step 4: Simplify right side
    8,102.94x = 41,562,582.02
  5. Step 5: Solve for x
    x = 41,562,582.02/8,102.94
  6. Step 6: Final answer
    x = 5,129.32

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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.