Home / 1,431.48-2,146.26-806.82

Finding the Fourth Proportional to 1,431.48, 2,146.26 and 806.82

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Solution

The fourth proportional to 1,431.48, 2,146.26 and 806.82 is: 1,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.48 : 2,146.26 = 806.82 : x
  2. Step 2: Convert to fraction form
    1,431.48/2,146.26 = 806.82/x
  3. Step 3: Cross multiply
    1,431.48x = 2,146.26 × 806.82
  4. Step 4: Simplify right side
    1,431.48x = 1,731,645.49
  5. Step 5: Solve for x
    x = 1,731,645.49/1,431.48
  6. Step 6: Final answer
    x = 1,209.69

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1.5x scale

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.