Home / 2,276.33-3,140.66-1,391.23

Finding the Fourth Proportional to 2,276.33, 3,140.66 and 1,391.23

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Solution

The fourth proportional to 2,276.33, 3,140.66 and 1,391.23 is: 1,919.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.33 : 3,140.66 = 1,391.23 : x
  2. Step 2: Convert to fraction form
    2,276.33/3,140.66 = 1,391.23/x
  3. Step 3: Cross multiply
    2,276.33x = 3,140.66 × 1,391.23
  4. Step 4: Simplify right side
    2,276.33x = 4,369,357.75
  5. Step 5: Solve for x
    x = 4,369,357.75/2,276.33
  6. Step 6: Final answer
    x = 1,919.47

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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.