Home / 1,905.15-2,629.22-1,119.32

Finding the Fourth Proportional to 1,905.15, 2,629.22 and 1,119.32

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Solution

The fourth proportional to 1,905.15, 2,629.22 and 1,119.32 is: 1,544.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.15 : 2,629.22 = 1,119.32 : x
  2. Step 2: Convert to fraction form
    1,905.15/2,629.22 = 1,119.32/x
  3. Step 3: Cross multiply
    1,905.15x = 2,629.22 × 1,119.32
  4. Step 4: Simplify right side
    1,905.15x = 2,942,938.53
  5. Step 5: Solve for x
    x = 2,942,938.53/1,905.15
  6. Step 6: Final answer
    x = 1,544.73

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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.