Home / 2,831.13-4,239.81-2,005.47

Finding the Fourth Proportional to 2,831.13, 4,239.81 and 2,005.47

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Solution

The fourth proportional to 2,831.13, 4,239.81 and 2,005.47 is: 3,003.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.13 : 4,239.81 = 2,005.47 : x
  2. Step 2: Convert to fraction form
    2,831.13/4,239.81 = 2,005.47/x
  3. Step 3: Cross multiply
    2,831.13x = 4,239.81 × 2,005.47
  4. Step 4: Simplify right side
    2,831.13x = 8,502,811.76
  5. Step 5: Solve for x
    x = 8,502,811.76/2,831.13
  6. Step 6: Final answer
    x = 3,003.33

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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.