Home / 1,636.24-2,255.70-1,169.68

Finding the Fourth Proportional to 1,636.24, 2,255.70 and 1,169.68

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Solution

The fourth proportional to 1,636.24, 2,255.70 and 1,169.68 is: 1,612.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.24 : 2,255.70 = 1,169.68 : x
  2. Step 2: Convert to fraction form
    1,636.24/2,255.70 = 1,169.68/x
  3. Step 3: Cross multiply
    1,636.24x = 2,255.70 × 1,169.68
  4. Step 4: Simplify right side
    1,636.24x = 2,638,447.18
  5. Step 5: Solve for x
    x = 2,638,447.18/1,636.24
  6. Step 6: Final answer
    x = 1,612.51

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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.