Home / 1,645.70-2,270.58-1,055.22

Finding the Fourth Proportional to 1,645.70, 2,270.58 and 1,055.22

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Solution

The fourth proportional to 1,645.70, 2,270.58 and 1,055.22 is: 1,455.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.70 : 2,270.58 = 1,055.22 : x
  2. Step 2: Convert to fraction form
    1,645.70/2,270.58 = 1,055.22/x
  3. Step 3: Cross multiply
    1,645.70x = 2,270.58 × 1,055.22
  4. Step 4: Simplify right side
    1,645.70x = 2,395,961.43
  5. Step 5: Solve for x
    x = 2,395,961.43/1,645.70
  6. Step 6: Final answer
    x = 1,455.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.