Home / 1,431.19-2,145.93-1,269.19

Finding the Fourth Proportional to 1,431.19, 2,145.93 and 1,269.19

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Solution

The fourth proportional to 1,431.19, 2,145.93 and 1,269.19 is: 1,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.19 : 2,145.93 = 1,269.19 : x
  2. Step 2: Convert to fraction form
    1,431.19/2,145.93 = 1,269.19/x
  3. Step 3: Cross multiply
    1,431.19x = 2,145.93 × 1,269.19
  4. Step 4: Simplify right side
    1,431.19x = 2,723,592.90
  5. Step 5: Solve for x
    x = 2,723,592.90/1,431.19
  6. Step 6: Final answer
    x = 1,903.03

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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.