Home / 1,828.40-2,738.55-1,623.20

Finding the Fourth Proportional to 1,828.40, 2,738.55 and 1,623.20

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Solution

The fourth proportional to 1,828.40, 2,738.55 and 1,623.20 is: 2,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828.40 : 2,738.55 = 1,623.20 : x
  2. Step 2: Convert to fraction form
    1,828.40/2,738.55 = 1,623.20/x
  3. Step 3: Cross multiply
    1,828.40x = 2,738.55 × 1,623.20
  4. Step 4: Simplify right side
    1,828.40x = 4,445,214.36
  5. Step 5: Solve for x
    x = 4,445,214.36/1,828.40
  6. Step 6: Final answer
    x = 2,431.20

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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.