Home / 2,630.34-3,945.78-850.95

Finding the Fourth Proportional to 2,630.34, 3,945.78 and 850.95

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Solution

The fourth proportional to 2,630.34, 3,945.78 and 850.95 is: 1,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.34 : 3,945.78 = 850.95 : x
  2. Step 2: Convert to fraction form
    2,630.34/3,945.78 = 850.95/x
  3. Step 3: Cross multiply
    2,630.34x = 3,945.78 × 850.95
  4. Step 4: Simplify right side
    2,630.34x = 3,357,661.49
  5. Step 5: Solve for x
    x = 3,357,661.49/2,630.34
  6. Step 6: Final answer
    x = 1,276.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.