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Finding the Fourth Proportional to 3,920.63, 5,902.32 and 3,576.17

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Solution

The fourth proportional to 3,920.63, 5,902.32 and 3,576.17 is: 5,383.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.63 : 5,902.32 = 3,576.17 : x
  2. Step 2: Convert to fraction form
    3,920.63/5,902.32 = 3,576.17/x
  3. Step 3: Cross multiply
    3,920.63x = 5,902.32 × 3,576.17
  4. Step 4: Simplify right side
    3,920.63x = 21,107,670.20
  5. Step 5: Solve for x
    x = 21,107,670.20/3,920.63
  6. Step 6: Final answer
    x = 5,383.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.