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Finding the Fourth Proportional to 6,621.07, 9,930.09 and 3,953.41

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Solution

The fourth proportional to 6,621.07, 9,930.09 and 3,953.41 is: 5,929.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.07 : 9,930.09 = 3,953.41 : x
  2. Step 2: Convert to fraction form
    6,621.07/9,930.09 = 3,953.41/x
  3. Step 3: Cross multiply
    6,621.07x = 9,930.09 × 3,953.41
  4. Step 4: Simplify right side
    6,621.07x = 39,257,697.34
  5. Step 5: Solve for x
    x = 39,257,697.34/6,621.07
  6. Step 6: Final answer
    x = 5,929.21

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1.5x scale

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.