Home / 1,857.89-2,786.76-471.27

Finding the Fourth Proportional to 1,857.89, 2,786.76 and 471.27

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Solution

The fourth proportional to 1,857.89, 2,786.76 and 471.27 is: 706.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.89 : 2,786.76 = 471.27 : x
  2. Step 2: Convert to fraction form
    1,857.89/2,786.76 = 471.27/x
  3. Step 3: Cross multiply
    1,857.89x = 2,786.76 × 471.27
  4. Step 4: Simplify right side
    1,857.89x = 1,313,316.39
  5. Step 5: Solve for x
    x = 1,313,316.39/1,857.89
  6. Step 6: Final answer
    x = 706.89

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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.