Home / 1,212.17-1,819.16-471.89

Finding the Fourth Proportional to 1,212.17, 1,819.16 and 471.89

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Solution

The fourth proportional to 1,212.17, 1,819.16 and 471.89 is: 708.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.17 : 1,819.16 = 471.89 : x
  2. Step 2: Convert to fraction form
    1,212.17/1,819.16 = 471.89/x
  3. Step 3: Cross multiply
    1,212.17x = 1,819.16 × 471.89
  4. Step 4: Simplify right side
    1,212.17x = 858,431.96
  5. Step 5: Solve for x
    x = 858,431.96/1,212.17
  6. Step 6: Final answer
    x = 708.18

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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.