Home / 2,146.79-3,220.19-1,172.36

Finding the Fourth Proportional to 2,146.79, 3,220.19 and 1,172.36

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Solution

The fourth proportional to 2,146.79, 3,220.19 and 1,172.36 is: 1,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.79 : 3,220.19 = 1,172.36 : x
  2. Step 2: Convert to fraction form
    2,146.79/3,220.19 = 1,172.36/x
  3. Step 3: Cross multiply
    2,146.79x = 3,220.19 × 1,172.36
  4. Step 4: Simplify right side
    2,146.79x = 3,775,199.99
  5. Step 5: Solve for x
    x = 3,775,199.99/2,146.79
  6. Step 6: Final answer
    x = 1,758.54

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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.