Home / 2,121.63-3,182.99-1,146.39

Finding the Fourth Proportional to 2,121.63, 3,182.99 and 1,146.39

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Solution

The fourth proportional to 2,121.63, 3,182.99 and 1,146.39 is: 1,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.63 : 3,182.99 = 1,146.39 : x
  2. Step 2: Convert to fraction form
    2,121.63/3,182.99 = 1,146.39/x
  3. Step 3: Cross multiply
    2,121.63x = 3,182.99 × 1,146.39
  4. Step 4: Simplify right side
    2,121.63x = 3,648,942.17
  5. Step 5: Solve for x
    x = 3,648,942.17/2,121.63
  6. Step 6: Final answer
    x = 1,719.88

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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.