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Finding the Fourth Proportional to 3,892.96, 5,368.02 and 2,631.82

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Solution

The fourth proportional to 3,892.96, 5,368.02 and 2,631.82 is: 3,629.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.96 : 5,368.02 = 2,631.82 : x
  2. Step 2: Convert to fraction form
    3,892.96/5,368.02 = 2,631.82/x
  3. Step 3: Cross multiply
    3,892.96x = 5,368.02 × 2,631.82
  4. Step 4: Simplify right side
    3,892.96x = 14,127,662.40
  5. Step 5: Solve for x
    x = 14,127,662.40/3,892.96
  6. Step 6: Final answer
    x = 3,629.03

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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.