Home / 1,553.46-2,331.20-1,428.31

Finding the Fourth Proportional to 1,553.46, 2,331.20 and 1,428.31

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Solution

The fourth proportional to 1,553.46, 2,331.20 and 1,428.31 is: 2,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.46 : 2,331.20 = 1,428.31 : x
  2. Step 2: Convert to fraction form
    1,553.46/2,331.20 = 1,428.31/x
  3. Step 3: Cross multiply
    1,553.46x = 2,331.20 × 1,428.31
  4. Step 4: Simplify right side
    1,553.46x = 3,329,676.27
  5. Step 5: Solve for x
    x = 3,329,676.27/1,553.46
  6. Step 6: Final answer
    x = 2,143.39

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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.