Home / 1,553.58-2,331.38-1,428.44

Finding the Fourth Proportional to 1,553.58, 2,331.38 and 1,428.44

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Solution

The fourth proportional to 1,553.58, 2,331.38 and 1,428.44 is: 2,143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.58 : 2,331.38 = 1,428.44 : x
  2. Step 2: Convert to fraction form
    1,553.58/2,331.38 = 1,428.44/x
  3. Step 3: Cross multiply
    1,553.58x = 2,331.38 × 1,428.44
  4. Step 4: Simplify right side
    1,553.58x = 3,330,228.36
  5. Step 5: Solve for x
    x = 3,330,228.36/1,553.58
  6. Step 6: Final answer
    x = 2,143.58

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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.