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Finding the Fourth Proportional to 3,857.49, 5,783.00 and 2,621.43

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Solution

The fourth proportional to 3,857.49, 5,783.00 and 2,621.43 is: 3,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.49 : 5,783.00 = 2,621.43 : x
  2. Step 2: Convert to fraction form
    3,857.49/5,783.00 = 2,621.43/x
  3. Step 3: Cross multiply
    3,857.49x = 5,783.00 × 2,621.43
  4. Step 4: Simplify right side
    3,857.49x = 15,159,716.58
  5. Step 5: Solve for x
    x = 15,159,716.58/3,857.49
  6. Step 6: Final answer
    x = 3,929.94

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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.