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Finding the Fourth Proportional to 2,796.35, 4,194.91 and 947.98

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Solution

The fourth proportional to 2,796.35, 4,194.91 and 947.98 is: 1,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.35 : 4,194.91 = 947.98 : x
  2. Step 2: Convert to fraction form
    2,796.35/4,194.91 = 947.98/x
  3. Step 3: Cross multiply
    2,796.35x = 4,194.91 × 947.98
  4. Step 4: Simplify right side
    2,796.35x = 3,976,688.08
  5. Step 5: Solve for x
    x = 3,976,688.08/2,796.35
  6. Step 6: Final answer
    x = 1,422.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.