Home / 3,121-4,306.98-1,723.96

Finding the Fourth Proportional to 3,121, 4,306.98 and 1,723.96

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Solution

The fourth proportional to 3,121, 4,306.98 and 1,723.96 is: 2,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121 : 4,306.98 = 1,723.96 : x
  2. Step 2: Convert to fraction form
    3,121/4,306.98 = 1,723.96/x
  3. Step 3: Cross multiply
    3,121x = 4,306.98 × 1,723.96
  4. Step 4: Simplify right side
    3,121x = 7,425,061.24
  5. Step 5: Solve for x
    x = 7,425,061.24/3,121
  6. Step 6: Final answer
    x = 2,379.06

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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.