Home / 2,124.84-3,172.50-1,993.62

Finding the Fourth Proportional to 2,124.84, 3,172.50 and 1,993.62

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Solution

The fourth proportional to 2,124.84, 3,172.50 and 1,993.62 is: 2,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.84 : 3,172.50 = 1,993.62 : x
  2. Step 2: Convert to fraction form
    2,124.84/3,172.50 = 1,993.62/x
  3. Step 3: Cross multiply
    2,124.84x = 3,172.50 × 1,993.62
  4. Step 4: Simplify right side
    2,124.84x = 6,324,759.45
  5. Step 5: Solve for x
    x = 6,324,759.45/2,124.84
  6. Step 6: Final answer
    x = 2,976.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.