Home / 1,431.75-2,148.99-1,018.96

Finding the Fourth Proportional to 1,431.75, 2,148.99 and 1,018.96

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Solution

The fourth proportional to 1,431.75, 2,148.99 and 1,018.96 is: 1,529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.75 : 2,148.99 = 1,018.96 : x
  2. Step 2: Convert to fraction form
    1,431.75/2,148.99 = 1,018.96/x
  3. Step 3: Cross multiply
    1,431.75x = 2,148.99 × 1,018.96
  4. Step 4: Simplify right side
    1,431.75x = 2,189,734.85
  5. Step 5: Solve for x
    x = 2,189,734.85/1,431.75
  6. Step 6: Final answer
    x = 1,529.41

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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.