Home / 2,775.38-3,831.42-2,144.48

Finding the Fourth Proportional to 2,775.38, 3,831.42 and 2,144.48

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Solution

The fourth proportional to 2,775.38, 3,831.42 and 2,144.48 is: 2,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.38 : 3,831.42 = 2,144.48 : x
  2. Step 2: Convert to fraction form
    2,775.38/3,831.42 = 2,144.48/x
  3. Step 3: Cross multiply
    2,775.38x = 3,831.42 × 2,144.48
  4. Step 4: Simplify right side
    2,775.38x = 8,216,384.40
  5. Step 5: Solve for x
    x = 8,216,384.40/2,775.38
  6. Step 6: Final answer
    x = 2,960.46

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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.