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Finding the Fourth Proportional to 3,905.07, 5,395.05 and 3,274.49

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Solution

The fourth proportional to 3,905.07, 5,395.05 and 3,274.49 is: 4,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.07 : 5,395.05 = 3,274.49 : x
  2. Step 2: Convert to fraction form
    3,905.07/5,395.05 = 3,274.49/x
  3. Step 3: Cross multiply
    3,905.07x = 5,395.05 × 3,274.49
  4. Step 4: Simplify right side
    3,905.07x = 17,666,010.30
  5. Step 5: Solve for x
    x = 17,666,010.30/3,905.07
  6. Step 6: Final answer
    x = 4,523.87

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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.