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Finding the Fourth Proportional to 3,853.35, 5,313.35 and 2,789.01

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Solution

The fourth proportional to 3,853.35, 5,313.35 and 2,789.01 is: 3,845.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.35 : 5,313.35 = 2,789.01 : x
  2. Step 2: Convert to fraction form
    3,853.35/5,313.35 = 2,789.01/x
  3. Step 3: Cross multiply
    3,853.35x = 5,313.35 × 2,789.01
  4. Step 4: Simplify right side
    3,853.35x = 14,818,993.26
  5. Step 5: Solve for x
    x = 14,818,993.26/3,853.35
  6. Step 6: Final answer
    x = 3,845.74

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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.