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Finding the Fourth Proportional to 3,005.49, 4,145.49 and 2,757.63

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Solution

The fourth proportional to 3,005.49, 4,145.49 and 2,757.63 is: 3,803.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.49 : 4,145.49 = 2,757.63 : x
  2. Step 2: Convert to fraction form
    3,005.49/4,145.49 = 2,757.63/x
  3. Step 3: Cross multiply
    3,005.49x = 4,145.49 × 2,757.63
  4. Step 4: Simplify right side
    3,005.49x = 11,431,727.59
  5. Step 5: Solve for x
    x = 11,431,727.59/3,005.49
  6. Step 6: Final answer
    x = 3,803.62

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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.