Home / 2,169.36-2,993.72-1,225.19

Finding the Fourth Proportional to 2,169.36, 2,993.72 and 1,225.19

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Solution

The fourth proportional to 2,169.36, 2,993.72 and 1,225.19 is: 1,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.36 : 2,993.72 = 1,225.19 : x
  2. Step 2: Convert to fraction form
    2,169.36/2,993.72 = 1,225.19/x
  3. Step 3: Cross multiply
    2,169.36x = 2,993.72 × 1,225.19
  4. Step 4: Simplify right side
    2,169.36x = 3,667,877.17
  5. Step 5: Solve for x
    x = 3,667,877.17/2,169.36
  6. Step 6: Final answer
    x = 1,690.76

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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.