Home / 1,821.32-2,731.83-1,090.36

Finding the Fourth Proportional to 1,821.32, 2,731.83 and 1,090.36

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Solution

The fourth proportional to 1,821.32, 2,731.83 and 1,090.36 is: 1,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.32 : 2,731.83 = 1,090.36 : x
  2. Step 2: Convert to fraction form
    1,821.32/2,731.83 = 1,090.36/x
  3. Step 3: Cross multiply
    1,821.32x = 2,731.83 × 1,090.36
  4. Step 4: Simplify right side
    1,821.32x = 2,978,677.48
  5. Step 5: Solve for x
    x = 2,978,677.48/1,821.32
  6. Step 6: Final answer
    x = 1,635.45

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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.