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Finding the Fourth Proportional to 6,816.71, 10,220.15 and 2,653.21

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Solution

The fourth proportional to 6,816.71, 10,220.15 and 2,653.21 is: 3,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,816.71 : 10,220.15 = 2,653.21 : x
  2. Step 2: Convert to fraction form
    6,816.71/10,220.15 = 2,653.21/x
  3. Step 3: Cross multiply
    6,816.71x = 10,220.15 × 2,653.21
  4. Step 4: Simplify right side
    6,816.71x = 27,116,185.26
  5. Step 5: Solve for x
    x = 27,116,185.26/6,816.71
  6. Step 6: Final answer
    x = 3,977.90

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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.