Home / 1,821.38-2,728.06-1,505.45

Finding the Fourth Proportional to 1,821.38, 2,728.06 and 1,505.45

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Solution

The fourth proportional to 1,821.38, 2,728.06 and 1,505.45 is: 2,254.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.38 : 2,728.06 = 1,505.45 : x
  2. Step 2: Convert to fraction form
    1,821.38/2,728.06 = 1,505.45/x
  3. Step 3: Cross multiply
    1,821.38x = 2,728.06 × 1,505.45
  4. Step 4: Simplify right side
    1,821.38x = 4,106,954.11
  5. Step 5: Solve for x
    x = 4,106,954.11/1,821.38
  6. Step 6: Final answer
    x = 2,254.86

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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.