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Finding the Fourth Proportional to 2,835.78, 3,912.02 and 2,442.12

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Solution

The fourth proportional to 2,835.78, 3,912.02 and 2,442.12 is: 3,368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,835.78 : 3,912.02 = 2,442.12 : x
  2. Step 2: Convert to fraction form
    2,835.78/3,912.02 = 2,442.12/x
  3. Step 3: Cross multiply
    2,835.78x = 3,912.02 × 2,442.12
  4. Step 4: Simplify right side
    2,835.78x = 9,553,622.28
  5. Step 5: Solve for x
    x = 9,553,622.28/2,835.78
  6. Step 6: Final answer
    x = 3,368.96

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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.