Home / 2,776.13-3,831.57-1,781.37

Finding the Fourth Proportional to 2,776.13, 3,831.57 and 1,781.37

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Solution

The fourth proportional to 2,776.13, 3,831.57 and 1,781.37 is: 2,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.13 : 3,831.57 = 1,781.37 : x
  2. Step 2: Convert to fraction form
    2,776.13/3,831.57 = 1,781.37/x
  3. Step 3: Cross multiply
    2,776.13x = 3,831.57 × 1,781.37
  4. Step 4: Simplify right side
    2,776.13x = 6,825,443.85
  5. Step 5: Solve for x
    x = 6,825,443.85/2,776.13
  6. Step 6: Final answer
    x = 2,458.62

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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.