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Finding the Fourth Proportional to 2,940.48, 4,394.40 and 1,958.40

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Solution

The fourth proportional to 2,940.48, 4,394.40 and 1,958.40 is: 2,926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.48 : 4,394.40 = 1,958.40 : x
  2. Step 2: Convert to fraction form
    2,940.48/4,394.40 = 1,958.40/x
  3. Step 3: Cross multiply
    2,940.48x = 4,394.40 × 1,958.40
  4. Step 4: Simplify right side
    2,940.48x = 8,605,992.96
  5. Step 5: Solve for x
    x = 8,605,992.96/2,940.48
  6. Step 6: Final answer
    x = 2,926.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.