Home / 2,831.83-3,910.08-1,949.74

Finding the Fourth Proportional to 2,831.83, 3,910.08 and 1,949.74

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Solution

The fourth proportional to 2,831.83, 3,910.08 and 1,949.74 is: 2,692.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.83 : 3,910.08 = 1,949.74 : x
  2. Step 2: Convert to fraction form
    2,831.83/3,910.08 = 1,949.74/x
  3. Step 3: Cross multiply
    2,831.83x = 3,910.08 × 1,949.74
  4. Step 4: Simplify right side
    2,831.83x = 7,623,639.38
  5. Step 5: Solve for x
    x = 7,623,639.38/2,831.83
  6. Step 6: Final answer
    x = 2,692.12

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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.