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Finding the Fourth Proportional to 6,620.84, 9,136.34 and 3,788.22

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Solution

The fourth proportional to 6,620.84, 9,136.34 and 3,788.22 is: 5,227.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.84 : 9,136.34 = 3,788.22 : x
  2. Step 2: Convert to fraction form
    6,620.84/9,136.34 = 3,788.22/x
  3. Step 3: Cross multiply
    6,620.84x = 9,136.34 × 3,788.22
  4. Step 4: Simplify right side
    6,620.84x = 34,610,465.36
  5. Step 5: Solve for x
    x = 34,610,465.36/6,620.84
  6. Step 6: Final answer
    x = 5,227.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.