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Finding the Fourth Proportional to 5,305.56, 7,322.10 and 2,947.92

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Solution

The fourth proportional to 5,305.56, 7,322.10 and 2,947.92 is: 4,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.56 : 7,322.10 = 2,947.92 : x
  2. Step 2: Convert to fraction form
    5,305.56/7,322.10 = 2,947.92/x
  3. Step 3: Cross multiply
    5,305.56x = 7,322.10 × 2,947.92
  4. Step 4: Simplify right side
    5,305.56x = 21,584,965.03
  5. Step 5: Solve for x
    x = 21,584,965.03/5,305.56
  6. Step 6: Final answer
    x = 4,068.37

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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.