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Finding the Fourth Proportional to 3,238.63, 4,857.21 and 1,264.31

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Solution

The fourth proportional to 3,238.63, 4,857.21 and 1,264.31 is: 1,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.63 : 4,857.21 = 1,264.31 : x
  2. Step 2: Convert to fraction form
    3,238.63/4,857.21 = 1,264.31/x
  3. Step 3: Cross multiply
    3,238.63x = 4,857.21 × 1,264.31
  4. Step 4: Simplify right side
    3,238.63x = 6,140,999.63
  5. Step 5: Solve for x
    x = 6,140,999.63/3,238.63
  6. Step 6: Final answer
    x = 1,896.17

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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.