Home / 2,831.25-3,904.61-1,835.54

Finding the Fourth Proportional to 2,831.25, 3,904.61 and 1,835.54

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Solution

The fourth proportional to 2,831.25, 3,904.61 and 1,835.54 is: 2,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.25 : 3,904.61 = 1,835.54 : x
  2. Step 2: Convert to fraction form
    2,831.25/3,904.61 = 1,835.54/x
  3. Step 3: Cross multiply
    2,831.25x = 3,904.61 × 1,835.54
  4. Step 4: Simplify right side
    2,831.25x = 7,167,039.14
  5. Step 5: Solve for x
    x = 7,167,039.14/2,831.25
  6. Step 6: Final answer
    x = 2,531.40

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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.