Home / 1,640.49-2,458.63-1,055.26

Finding the Fourth Proportional to 1,640.49, 2,458.63 and 1,055.26

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Solution

The fourth proportional to 1,640.49, 2,458.63 and 1,055.26 is: 1,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.49 : 2,458.63 = 1,055.26 : x
  2. Step 2: Convert to fraction form
    1,640.49/2,458.63 = 1,055.26/x
  3. Step 3: Cross multiply
    1,640.49x = 2,458.63 × 1,055.26
  4. Step 4: Simplify right side
    1,640.49x = 2,594,493.89
  5. Step 5: Solve for x
    x = 2,594,493.89/1,640.49
  6. Step 6: Final answer
    x = 1,581.54

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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.