Home / 7,819.02-11,721.24-2,621.25

Finding the Fourth Proportional to 7,819.02, 11,721.24 and 2,621.25

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Solution

The fourth proportional to 7,819.02, 11,721.24 and 2,621.25 is: 3,929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.02 : 11,721.24 = 2,621.25 : x
  2. Step 2: Convert to fraction form
    7,819.02/11,721.24 = 2,621.25/x
  3. Step 3: Cross multiply
    7,819.02x = 11,721.24 × 2,621.25
  4. Step 4: Simplify right side
    7,819.02x = 30,724,300.35
  5. Step 5: Solve for x
    x = 30,724,300.35/7,819.02
  6. Step 6: Final answer
    x = 3,929.43

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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.