Home / 3,831.25-5,287.13-2,175.25

Finding the Fourth Proportional to 3,831.25, 5,287.13 and 2,175.25

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Solution

The fourth proportional to 3,831.25, 5,287.13 and 2,175.25 is: 3,001.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.25 : 5,287.13 = 2,175.25 : x
  2. Step 2: Convert to fraction form
    3,831.25/5,287.13 = 2,175.25/x
  3. Step 3: Cross multiply
    3,831.25x = 5,287.13 × 2,175.25
  4. Step 4: Simplify right side
    3,831.25x = 11,500,829.53
  5. Step 5: Solve for x
    x = 11,500,829.53/3,831.25
  6. Step 6: Final answer
    x = 3,001.85

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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.