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Finding the Fourth Proportional to 3,089.76, 4,631.52 and 1,356.96

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Solution

The fourth proportional to 3,089.76, 4,631.52 and 1,356.96 is: 2,034.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.76 : 4,631.52 = 1,356.96 : x
  2. Step 2: Convert to fraction form
    3,089.76/4,631.52 = 1,356.96/x
  3. Step 3: Cross multiply
    3,089.76x = 4,631.52 × 1,356.96
  4. Step 4: Simplify right side
    3,089.76x = 6,284,787.38
  5. Step 5: Solve for x
    x = 6,284,787.38/3,089.76
  6. Step 6: Final answer
    x = 2,034.07

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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.