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Finding the Fourth Proportional to 3,087.63, 4,631.91 and 896.09

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Solution

The fourth proportional to 3,087.63, 4,631.91 and 896.09 is: 1,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.63 : 4,631.91 = 896.09 : x
  2. Step 2: Convert to fraction form
    3,087.63/4,631.91 = 896.09/x
  3. Step 3: Cross multiply
    3,087.63x = 4,631.91 × 896.09
  4. Step 4: Simplify right side
    3,087.63x = 4,150,585.07
  5. Step 5: Solve for x
    x = 4,150,585.07/3,087.63
  6. Step 6: Final answer
    x = 1,344.26

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1.5x scale

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.