Home / 2,831.90-4,249.49-1,188.32

Finding the Fourth Proportional to 2,831.90, 4,249.49 and 1,188.32

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Solution

The fourth proportional to 2,831.90, 4,249.49 and 1,188.32 is: 1,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.90 : 4,249.49 = 1,188.32 : x
  2. Step 2: Convert to fraction form
    2,831.90/4,249.49 = 1,188.32/x
  3. Step 3: Cross multiply
    2,831.90x = 4,249.49 × 1,188.32
  4. Step 4: Simplify right side
    2,831.90x = 5,049,726.77
  5. Step 5: Solve for x
    x = 5,049,726.77/2,831.90
  6. Step 6: Final answer
    x = 1,783.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.