Home / 2,166.17-2,989.64-1,382.09

Finding the Fourth Proportional to 2,166.17, 2,989.64 and 1,382.09

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Solution

The fourth proportional to 2,166.17, 2,989.64 and 1,382.09 is: 1,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.17 : 2,989.64 = 1,382.09 : x
  2. Step 2: Convert to fraction form
    2,166.17/2,989.64 = 1,382.09/x
  3. Step 3: Cross multiply
    2,166.17x = 2,989.64 × 1,382.09
  4. Step 4: Simplify right side
    2,166.17x = 4,131,940.05
  5. Step 5: Solve for x
    x = 4,131,940.05/2,166.17
  6. Step 6: Final answer
    x = 1,907.49

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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.