Home / 1,728.44-2,384.70-1,098.80

Finding the Fourth Proportional to 1,728.44, 2,384.70 and 1,098.80

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Solution

The fourth proportional to 1,728.44, 2,384.70 and 1,098.80 is: 1,516.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.44 : 2,384.70 = 1,098.80 : x
  2. Step 2: Convert to fraction form
    1,728.44/2,384.70 = 1,098.80/x
  3. Step 3: Cross multiply
    1,728.44x = 2,384.70 × 1,098.80
  4. Step 4: Simplify right side
    1,728.44x = 2,620,308.36
  5. Step 5: Solve for x
    x = 2,620,308.36/1,728.44
  6. Step 6: Final answer
    x = 1,516.00

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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.