Home / 2,911.77-4,022.37-2,321.55

Finding the Fourth Proportional to 2,911.77, 4,022.37 and 2,321.55

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Solution

The fourth proportional to 2,911.77, 4,022.37 and 2,321.55 is: 3,207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.77 : 4,022.37 = 2,321.55 : x
  2. Step 2: Convert to fraction form
    2,911.77/4,022.37 = 2,321.55/x
  3. Step 3: Cross multiply
    2,911.77x = 4,022.37 × 2,321.55
  4. Step 4: Simplify right side
    2,911.77x = 9,338,133.07
  5. Step 5: Solve for x
    x = 9,338,133.07/2,911.77
  6. Step 6: Final answer
    x = 3,207.03

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1.5x scale

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.