Home / 1,296.70-1,954.72-1,212.05

Finding the Fourth Proportional to 1,296.70, 1,954.72 and 1,212.05

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Solution

The fourth proportional to 1,296.70, 1,954.72 and 1,212.05 is: 1,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.70 : 1,954.72 = 1,212.05 : x
  2. Step 2: Convert to fraction form
    1,296.70/1,954.72 = 1,212.05/x
  3. Step 3: Cross multiply
    1,296.70x = 1,954.72 × 1,212.05
  4. Step 4: Simplify right side
    1,296.70x = 2,369,218.38
  5. Step 5: Solve for x
    x = 2,369,218.38/1,296.70
  6. Step 6: Final answer
    x = 1,827.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.