Home / 1,644.12-2,270.40-1,055.68

Finding the Fourth Proportional to 1,644.12, 2,270.40 and 1,055.68

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Solution

The fourth proportional to 1,644.12, 2,270.40 and 1,055.68 is: 1,457.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.12 : 2,270.40 = 1,055.68 : x
  2. Step 2: Convert to fraction form
    1,644.12/2,270.40 = 1,055.68/x
  3. Step 3: Cross multiply
    1,644.12x = 2,270.40 × 1,055.68
  4. Step 4: Simplify right side
    1,644.12x = 2,396,815.87
  5. Step 5: Solve for x
    x = 2,396,815.87/1,644.12
  6. Step 6: Final answer
    x = 1,457.81

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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.