Home / 3,120.94-4,307.17-1,723.96

Finding the Fourth Proportional to 3,120.94, 4,307.17 and 1,723.96

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Solution

The fourth proportional to 3,120.94, 4,307.17 and 1,723.96 is: 2,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.94 : 4,307.17 = 1,723.96 : x
  2. Step 2: Convert to fraction form
    3,120.94/4,307.17 = 1,723.96/x
  3. Step 3: Cross multiply
    3,120.94x = 4,307.17 × 1,723.96
  4. Step 4: Simplify right side
    3,120.94x = 7,425,373.72
  5. Step 5: Solve for x
    x = 7,425,373.72/3,120.94
  6. Step 6: Final answer
    x = 2,379.21

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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.