Home / 2,831.40-4,245.05-1,904.66

Finding the Fourth Proportional to 2,831.40, 4,245.05 and 1,904.66

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Solution

The fourth proportional to 2,831.40, 4,245.05 and 1,904.66 is: 2,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.40 : 4,245.05 = 1,904.66 : x
  2. Step 2: Convert to fraction form
    2,831.40/4,245.05 = 1,904.66/x
  3. Step 3: Cross multiply
    2,831.40x = 4,245.05 × 1,904.66
  4. Step 4: Simplify right side
    2,831.40x = 8,085,376.93
  5. Step 5: Solve for x
    x = 8,085,376.93/2,831.40
  6. Step 6: Final answer
    x = 2,855.61

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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.