Home / 2,786.09-3,848.99-1,831.28

Finding the Fourth Proportional to 2,786.09, 3,848.99 and 1,831.28

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Solution

The fourth proportional to 2,786.09, 3,848.99 and 1,831.28 is: 2,529.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.09 : 3,848.99 = 1,831.28 : x
  2. Step 2: Convert to fraction form
    2,786.09/3,848.99 = 1,831.28/x
  3. Step 3: Cross multiply
    2,786.09x = 3,848.99 × 1,831.28
  4. Step 4: Simplify right side
    2,786.09x = 7,048,557.22
  5. Step 5: Solve for x
    x = 7,048,557.22/2,786.09
  6. Step 6: Final answer
    x = 2,529.91

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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.