Home / 1,645.68-2,268.82-1,055.19

Finding the Fourth Proportional to 1,645.68, 2,268.82 and 1,055.19

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Solution

The fourth proportional to 1,645.68, 2,268.82 and 1,055.19 is: 1,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.68 : 2,268.82 = 1,055.19 : x
  2. Step 2: Convert to fraction form
    1,645.68/2,268.82 = 1,055.19/x
  3. Step 3: Cross multiply
    1,645.68x = 2,268.82 × 1,055.19
  4. Step 4: Simplify right side
    1,645.68x = 2,394,025.23
  5. Step 5: Solve for x
    x = 2,394,025.23/1,645.68
  6. Step 6: Final answer
    x = 1,454.74

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1.5x scale

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.