Home / 3,678.07-5,516.98-1,212.83

Finding the Fourth Proportional to 3,678.07, 5,516.98 and 1,212.83

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Solution

The fourth proportional to 3,678.07, 5,516.98 and 1,212.83 is: 1,819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.07 : 5,516.98 = 1,212.83 : x
  2. Step 2: Convert to fraction form
    3,678.07/5,516.98 = 1,212.83/x
  3. Step 3: Cross multiply
    3,678.07x = 5,516.98 × 1,212.83
  4. Step 4: Simplify right side
    3,678.07x = 6,691,128.24
  5. Step 5: Solve for x
    x = 6,691,128.24/3,678.07
  6. Step 6: Final answer
    x = 1,819.19

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1.5x scale

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.