Home / 1,633.20-2,255.68-1,108.32

Finding the Fourth Proportional to 1,633.20, 2,255.68 and 1,108.32

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Solution

The fourth proportional to 1,633.20, 2,255.68 and 1,108.32 is: 1,530.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.20 : 2,255.68 = 1,108.32 : x
  2. Step 2: Convert to fraction form
    1,633.20/2,255.68 = 1,108.32/x
  3. Step 3: Cross multiply
    1,633.20x = 2,255.68 × 1,108.32
  4. Step 4: Simplify right side
    1,633.20x = 2,500,015.26
  5. Step 5: Solve for x
    x = 2,500,015.26/1,633.20
  6. Step 6: Final answer
    x = 1,530.75

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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.