Home / 4,629.21-6,388.46-2,640.39

Finding the Fourth Proportional to 4,629.21, 6,388.46 and 2,640.39

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Solution

The fourth proportional to 4,629.21, 6,388.46 and 2,640.39 is: 3,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,629.21 : 6,388.46 = 2,640.39 : x
  2. Step 2: Convert to fraction form
    4,629.21/6,388.46 = 2,640.39/x
  3. Step 3: Cross multiply
    4,629.21x = 6,388.46 × 2,640.39
  4. Step 4: Simplify right side
    4,629.21x = 16,868,025.90
  5. Step 5: Solve for x
    x = 16,868,025.90/4,629.21
  6. Step 6: Final answer
    x = 3,643.82

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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.