Home / 3,153.81-4,351.73-1,911.81

Finding the Fourth Proportional to 3,153.81, 4,351.73 and 1,911.81

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Solution

The fourth proportional to 3,153.81, 4,351.73 and 1,911.81 is: 2,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.81 : 4,351.73 = 1,911.81 : x
  2. Step 2: Convert to fraction form
    3,153.81/4,351.73 = 1,911.81/x
  3. Step 3: Cross multiply
    3,153.81x = 4,351.73 × 1,911.81
  4. Step 4: Simplify right side
    3,153.81x = 8,319,680.93
  5. Step 5: Solve for x
    x = 8,319,680.93/3,153.81
  6. Step 6: Final answer
    x = 2,637.98

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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.