Home / 1,645.48-2,268.42-1,120.84

Finding the Fourth Proportional to 1,645.48, 2,268.42 and 1,120.84

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Solution

The fourth proportional to 1,645.48, 2,268.42 and 1,120.84 is: 1,545.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.48 : 2,268.42 = 1,120.84 : x
  2. Step 2: Convert to fraction form
    1,645.48/2,268.42 = 1,120.84/x
  3. Step 3: Cross multiply
    1,645.48x = 2,268.42 × 1,120.84
  4. Step 4: Simplify right side
    1,645.48x = 2,542,535.87
  5. Step 5: Solve for x
    x = 2,542,535.87/1,645.48
  6. Step 6: Final answer
    x = 1,545.16

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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.