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Finding the Fourth Proportional to 2,944.40, 4,059.78 and 2,440.40

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Solution

The fourth proportional to 2,944.40, 4,059.78 and 2,440.40 is: 3,364.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,944.40 : 4,059.78 = 2,440.40 : x
  2. Step 2: Convert to fraction form
    2,944.40/4,059.78 = 2,440.40/x
  3. Step 3: Cross multiply
    2,944.40x = 4,059.78 × 2,440.40
  4. Step 4: Simplify right side
    2,944.40x = 9,907,487.11
  5. Step 5: Solve for x
    x = 9,907,487.11/2,944.40
  6. Step 6: Final answer
    x = 3,364.86

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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.