Home / 1,226.09-1,687.06-1,196.93

Finding the Fourth Proportional to 1,226.09, 1,687.06 and 1,196.93

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Solution

The fourth proportional to 1,226.09, 1,687.06 and 1,196.93 is: 1,646.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.09 : 1,687.06 = 1,196.93 : x
  2. Step 2: Convert to fraction form
    1,226.09/1,687.06 = 1,196.93/x
  3. Step 3: Cross multiply
    1,226.09x = 1,687.06 × 1,196.93
  4. Step 4: Simplify right side
    1,226.09x = 2,019,281.30
  5. Step 5: Solve for x
    x = 2,019,281.30/1,226.09
  6. Step 6: Final answer
    x = 1,646.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.