Home / 3,677.40-5,516.28-1,212.21

Finding the Fourth Proportional to 3,677.40, 5,516.28 and 1,212.21

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Solution

The fourth proportional to 3,677.40, 5,516.28 and 1,212.21 is: 1,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.40 : 5,516.28 = 1,212.21 : x
  2. Step 2: Convert to fraction form
    3,677.40/5,516.28 = 1,212.21/x
  3. Step 3: Cross multiply
    3,677.40x = 5,516.28 × 1,212.21
  4. Step 4: Simplify right side
    3,677.40x = 6,686,889.78
  5. Step 5: Solve for x
    x = 6,686,889.78/3,677.40
  6. Step 6: Final answer
    x = 1,818.37

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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.