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Finding the Fourth Proportional to 3,417.82, 4,716.51 and 1,905.40

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Solution

The fourth proportional to 3,417.82, 4,716.51 and 1,905.40 is: 2,629.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.82 : 4,716.51 = 1,905.40 : x
  2. Step 2: Convert to fraction form
    3,417.82/4,716.51 = 1,905.40/x
  3. Step 3: Cross multiply
    3,417.82x = 4,716.51 × 1,905.40
  4. Step 4: Simplify right side
    3,417.82x = 8,986,838.15
  5. Step 5: Solve for x
    x = 8,986,838.15/3,417.82
  6. Step 6: Final answer
    x = 2,629.41

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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.