Home / 1,480.31-2,202.99-1,431.09

Finding the Fourth Proportional to 1,480.31, 2,202.99 and 1,431.09

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Solution

The fourth proportional to 1,480.31, 2,202.99 and 1,431.09 is: 2,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.31 : 2,202.99 = 1,431.09 : x
  2. Step 2: Convert to fraction form
    1,480.31/2,202.99 = 1,431.09/x
  3. Step 3: Cross multiply
    1,480.31x = 2,202.99 × 1,431.09
  4. Step 4: Simplify right side
    1,480.31x = 3,152,676.96
  5. Step 5: Solve for x
    x = 3,152,676.96/1,480.31
  6. Step 6: Final answer
    x = 2,129.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.