Home / 2,911.85-4,361.95-2,127.97

Finding the Fourth Proportional to 2,911.85, 4,361.95 and 2,127.97

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Solution

The fourth proportional to 2,911.85, 4,361.95 and 2,127.97 is: 3,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.85 : 4,361.95 = 2,127.97 : x
  2. Step 2: Convert to fraction form
    2,911.85/4,361.95 = 2,127.97/x
  3. Step 3: Cross multiply
    2,911.85x = 4,361.95 × 2,127.97
  4. Step 4: Simplify right side
    2,911.85x = 9,282,106.85
  5. Step 5: Solve for x
    x = 9,282,106.85/2,911.85
  6. Step 6: Final answer
    x = 3,187.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.