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Finding the Fourth Proportional to 2,831.94, 4,250.34 and 2,102.94

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Solution

The fourth proportional to 2,831.94, 4,250.34 and 2,102.94 is: 3,156.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.94 : 4,250.34 = 2,102.94 : x
  2. Step 2: Convert to fraction form
    2,831.94/4,250.34 = 2,102.94/x
  3. Step 3: Cross multiply
    2,831.94x = 4,250.34 × 2,102.94
  4. Step 4: Simplify right side
    2,831.94x = 8,938,210.00
  5. Step 5: Solve for x
    x = 8,938,210.00/2,831.94
  6. Step 6: Final answer
    x = 3,156.21

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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.