Home / 2,161.78-2,983.32-1,322.84

Finding the Fourth Proportional to 2,161.78, 2,983.32 and 1,322.84

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Solution

The fourth proportional to 2,161.78, 2,983.32 and 1,322.84 is: 1,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.78 : 2,983.32 = 1,322.84 : x
  2. Step 2: Convert to fraction form
    2,161.78/2,983.32 = 1,322.84/x
  3. Step 3: Cross multiply
    2,161.78x = 2,983.32 × 1,322.84
  4. Step 4: Simplify right side
    2,161.78x = 3,946,462.49
  5. Step 5: Solve for x
    x = 3,946,462.49/2,161.78
  6. Step 6: Final answer
    x = 1,825.56

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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.