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Finding the Fourth Proportional to 2,883.13, 4,325.43 and 831.13

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Solution

The fourth proportional to 2,883.13, 4,325.43 and 831.13 is: 1,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.13 : 4,325.43 = 831.13 : x
  2. Step 2: Convert to fraction form
    2,883.13/4,325.43 = 831.13/x
  3. Step 3: Cross multiply
    2,883.13x = 4,325.43 × 831.13
  4. Step 4: Simplify right side
    2,883.13x = 3,594,994.64
  5. Step 5: Solve for x
    x = 3,594,994.64/2,883.13
  6. Step 6: Final answer
    x = 1,246.91

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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.