Home / 3,455.90-4,766.71-2,129.18

Finding the Fourth Proportional to 3,455.90, 4,766.71 and 2,129.18

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Solution

The fourth proportional to 3,455.90, 4,766.71 and 2,129.18 is: 2,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.90 : 4,766.71 = 2,129.18 : x
  2. Step 2: Convert to fraction form
    3,455.90/4,766.71 = 2,129.18/x
  3. Step 3: Cross multiply
    3,455.90x = 4,766.71 × 2,129.18
  4. Step 4: Simplify right side
    3,455.90x = 10,149,183.60
  5. Step 5: Solve for x
    x = 10,149,183.60/3,455.90
  6. Step 6: Final answer
    x = 2,936.77

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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.