Home / 8,619.86-12,929.80-2,777.34

Finding the Fourth Proportional to 8,619.86, 12,929.80 and 2,777.34

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Solution

The fourth proportional to 8,619.86, 12,929.80 and 2,777.34 is: 4,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.86 : 12,929.80 = 2,777.34 : x
  2. Step 2: Convert to fraction form
    8,619.86/12,929.80 = 2,777.34/x
  3. Step 3: Cross multiply
    8,619.86x = 12,929.80 × 2,777.34
  4. Step 4: Simplify right side
    8,619.86x = 35,910,450.73
  5. Step 5: Solve for x
    x = 35,910,450.73/8,619.86
  6. Step 6: Final answer
    x = 4,166.01

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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.