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Finding the Fourth Proportional to 2,885.07, 3,981.39 and 1,643.07

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Solution

The fourth proportional to 2,885.07, 3,981.39 and 1,643.07 is: 2,267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.07 : 3,981.39 = 1,643.07 : x
  2. Step 2: Convert to fraction form
    2,885.07/3,981.39 = 1,643.07/x
  3. Step 3: Cross multiply
    2,885.07x = 3,981.39 × 1,643.07
  4. Step 4: Simplify right side
    2,885.07x = 6,541,702.47
  5. Step 5: Solve for x
    x = 6,541,702.47/2,885.07
  6. Step 6: Final answer
    x = 2,267.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.