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Finding the Fourth Proportional to 4,689.76, 7,034.62 and 1,227

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Solution

The fourth proportional to 4,689.76, 7,034.62 and 1,227 is: 1,840.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.76 : 7,034.62 = 1,227 : x
  2. Step 2: Convert to fraction form
    4,689.76/7,034.62 = 1,227/x
  3. Step 3: Cross multiply
    4,689.76x = 7,034.62 × 1,227
  4. Step 4: Simplify right side
    4,689.76x = 8,631,478.74
  5. Step 5: Solve for x
    x = 8,631,478.74/4,689.76
  6. Step 6: Final answer
    x = 1,840.49

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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.