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Finding the Fourth Proportional to 3,892.07, 5,371.29 and 3,629.63

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Solution

The fourth proportional to 3,892.07, 5,371.29 and 3,629.63 is: 5,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.07 : 5,371.29 = 3,629.63 : x
  2. Step 2: Convert to fraction form
    3,892.07/5,371.29 = 3,629.63/x
  3. Step 3: Cross multiply
    3,892.07x = 5,371.29 × 3,629.63
  4. Step 4: Simplify right side
    3,892.07x = 19,495,808.75
  5. Step 5: Solve for x
    x = 19,495,808.75/3,892.07
  6. Step 6: Final answer
    x = 5,009.11

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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.