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Finding the Fourth Proportional to 3,786.56, 5,225.46 and 2,130.56

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Solution

The fourth proportional to 3,786.56, 5,225.46 and 2,130.56 is: 2,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.56 : 5,225.46 = 2,130.56 : x
  2. Step 2: Convert to fraction form
    3,786.56/5,225.46 = 2,130.56/x
  3. Step 3: Cross multiply
    3,786.56x = 5,225.46 × 2,130.56
  4. Step 4: Simplify right side
    3,786.56x = 11,133,169.12
  5. Step 5: Solve for x
    x = 11,133,169.12/3,786.56
  6. Step 6: Final answer
    x = 2,940.18

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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.