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Finding the Fourth Proportional to 4,612.73, 6,918.87 and 1,690.82

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Solution

The fourth proportional to 4,612.73, 6,918.87 and 1,690.82 is: 2,536.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,612.73 : 6,918.87 = 1,690.82 : x
  2. Step 2: Convert to fraction form
    4,612.73/6,918.87 = 1,690.82/x
  3. Step 3: Cross multiply
    4,612.73x = 6,918.87 × 1,690.82
  4. Step 4: Simplify right side
    4,612.73x = 11,698,563.77
  5. Step 5: Solve for x
    x = 11,698,563.77/4,612.73
  6. Step 6: Final answer
    x = 2,536.15

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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.