Home / 1,640.09-2,458.08-1,292.05

Finding the Fourth Proportional to 1,640.09, 2,458.08 and 1,292.05

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Solution

The fourth proportional to 1,640.09, 2,458.08 and 1,292.05 is: 1,936.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.09 : 2,458.08 = 1,292.05 : x
  2. Step 2: Convert to fraction form
    1,640.09/2,458.08 = 1,292.05/x
  3. Step 3: Cross multiply
    1,640.09x = 2,458.08 × 1,292.05
  4. Step 4: Simplify right side
    1,640.09x = 3,175,956.12
  5. Step 5: Solve for x
    x = 3,175,956.12/1,640.09
  6. Step 6: Final answer
    x = 1,936.46

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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.