Home / 2,778.10-3,831.29-2,305.24

Finding the Fourth Proportional to 2,778.10, 3,831.29 and 2,305.24

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Solution

The fourth proportional to 2,778.10, 3,831.29 and 2,305.24 is: 3,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.10 : 3,831.29 = 2,305.24 : x
  2. Step 2: Convert to fraction form
    2,778.10/3,831.29 = 2,305.24/x
  3. Step 3: Cross multiply
    2,778.10x = 3,831.29 × 2,305.24
  4. Step 4: Simplify right side
    2,778.10x = 8,832,012.28
  5. Step 5: Solve for x
    x = 8,832,012.28/2,778.10
  6. Step 6: Final answer
    x = 3,179.16

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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.