Home / 3,489.19-4,813.99-2,143.39

Finding the Fourth Proportional to 3,489.19, 4,813.99 and 2,143.39

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Solution

The fourth proportional to 3,489.19, 4,813.99 and 2,143.39 is: 2,957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.19 : 4,813.99 = 2,143.39 : x
  2. Step 2: Convert to fraction form
    3,489.19/4,813.99 = 2,143.39/x
  3. Step 3: Cross multiply
    3,489.19x = 4,813.99 × 2,143.39
  4. Step 4: Simplify right side
    3,489.19x = 10,318,258.03
  5. Step 5: Solve for x
    x = 10,318,258.03/3,489.19
  6. Step 6: Final answer
    x = 2,957.21

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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.