Home / 1,212.11-1,817.69-471.37

Finding the Fourth Proportional to 1,212.11, 1,817.69 and 471.37

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Solution

The fourth proportional to 1,212.11, 1,817.69 and 471.37 is: 706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.11 : 1,817.69 = 471.37 : x
  2. Step 2: Convert to fraction form
    1,212.11/1,817.69 = 471.37/x
  3. Step 3: Cross multiply
    1,212.11x = 1,817.69 × 471.37
  4. Step 4: Simplify right side
    1,212.11x = 856,803.69
  5. Step 5: Solve for x
    x = 856,803.69/1,212.11
  6. Step 6: Final answer
    x = 706.87

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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.