Home / 2,985.94-4,120.86-1,727.38

Finding the Fourth Proportional to 2,985.94, 4,120.86 and 1,727.38

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Solution

The fourth proportional to 2,985.94, 4,120.86 and 1,727.38 is: 2,383.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.94 : 4,120.86 = 1,727.38 : x
  2. Step 2: Convert to fraction form
    2,985.94/4,120.86 = 1,727.38/x
  3. Step 3: Cross multiply
    2,985.94x = 4,120.86 × 1,727.38
  4. Step 4: Simplify right side
    2,985.94x = 7,118,291.15
  5. Step 5: Solve for x
    x = 7,118,291.15/2,985.94
  6. Step 6: Final answer
    x = 2,383.94

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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.