Home / 1,644.80-2,464.32-1,129.28

Finding the Fourth Proportional to 1,644.80, 2,464.32 and 1,129.28

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Solution

The fourth proportional to 1,644.80, 2,464.32 and 1,129.28 is: 1,691.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.80 : 2,464.32 = 1,129.28 : x
  2. Step 2: Convert to fraction form
    1,644.80/2,464.32 = 1,129.28/x
  3. Step 3: Cross multiply
    1,644.80x = 2,464.32 × 1,129.28
  4. Step 4: Simplify right side
    1,644.80x = 2,782,907.29
  5. Step 5: Solve for x
    x = 2,782,907.29/1,644.80
  6. Step 6: Final answer
    x = 1,691.94

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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.