Home / 8,220.83-12,309.30-4,929.39

Finding the Fourth Proportional to 8,220.83, 12,309.30 and 4,929.39

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Solution

The fourth proportional to 8,220.83, 12,309.30 and 4,929.39 is: 7,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.83 : 12,309.30 = 4,929.39 : x
  2. Step 2: Convert to fraction form
    8,220.83/12,309.30 = 4,929.39/x
  3. Step 3: Cross multiply
    8,220.83x = 12,309.30 × 4,929.39
  4. Step 4: Simplify right side
    8,220.83x = 60,677,340.33
  5. Step 5: Solve for x
    x = 60,677,340.33/8,220.83
  6. Step 6: Final answer
    x = 7,380.93

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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.