Home / 3,013.75-4,159.90-1,687.89

Finding the Fourth Proportional to 3,013.75, 4,159.90 and 1,687.89

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Solution

The fourth proportional to 3,013.75, 4,159.90 and 1,687.89 is: 2,329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.75 : 4,159.90 = 1,687.89 : x
  2. Step 2: Convert to fraction form
    3,013.75/4,159.90 = 1,687.89/x
  3. Step 3: Cross multiply
    3,013.75x = 4,159.90 × 1,687.89
  4. Step 4: Simplify right side
    3,013.75x = 7,021,453.61
  5. Step 5: Solve for x
    x = 7,021,453.61/3,013.75
  6. Step 6: Final answer
    x = 2,329.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.