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Finding the Fourth Proportional to 4,986.63, 7,474.64 and 1,698.57

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Solution

The fourth proportional to 4,986.63, 7,474.64 and 1,698.57 is: 2,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.63 : 7,474.64 = 1,698.57 : x
  2. Step 2: Convert to fraction form
    4,986.63/7,474.64 = 1,698.57/x
  3. Step 3: Cross multiply
    4,986.63x = 7,474.64 × 1,698.57
  4. Step 4: Simplify right side
    4,986.63x = 12,696,190.77
  5. Step 5: Solve for x
    x = 12,696,190.77/4,986.63
  6. Step 6: Final answer
    x = 2,546.05

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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.