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Finding the Fourth Proportional to 3,640.94, 5,453.18 and 2,984.84

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Solution

The fourth proportional to 3,640.94, 5,453.18 and 2,984.84 is: 4,470.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.94 : 5,453.18 = 2,984.84 : x
  2. Step 2: Convert to fraction form
    3,640.94/5,453.18 = 2,984.84/x
  3. Step 3: Cross multiply
    3,640.94x = 5,453.18 × 2,984.84
  4. Step 4: Simplify right side
    3,640.94x = 16,276,869.79
  5. Step 5: Solve for x
    x = 16,276,869.79/3,640.94
  6. Step 6: Final answer
    x = 4,470.51

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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.