Home / 2,172.09-2,993.97-1,384.77

Finding the Fourth Proportional to 2,172.09, 2,993.97 and 1,384.77

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Solution

The fourth proportional to 2,172.09, 2,993.97 and 1,384.77 is: 1,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.09 : 2,993.97 = 1,384.77 : x
  2. Step 2: Convert to fraction form
    2,172.09/2,993.97 = 1,384.77/x
  3. Step 3: Cross multiply
    2,172.09x = 2,993.97 × 1,384.77
  4. Step 4: Simplify right side
    2,172.09x = 4,145,959.84
  5. Step 5: Solve for x
    x = 4,145,959.84/2,172.09
  6. Step 6: Final answer
    x = 1,908.74

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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.