Home / 1,820.40-2,728.44-1,090.32

Finding the Fourth Proportional to 1,820.40, 2,728.44 and 1,090.32

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Solution

The fourth proportional to 1,820.40, 2,728.44 and 1,090.32 is: 1,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.40 : 2,728.44 = 1,090.32 : x
  2. Step 2: Convert to fraction form
    1,820.40/2,728.44 = 1,090.32/x
  3. Step 3: Cross multiply
    1,820.40x = 2,728.44 × 1,090.32
  4. Step 4: Simplify right side
    1,820.40x = 2,974,872.70
  5. Step 5: Solve for x
    x = 2,974,872.70/1,820.40
  6. Step 6: Final answer
    x = 1,634.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.