Home / 1,175.15-1,616.75-1,169.68

Finding the Fourth Proportional to 1,175.15, 1,616.75 and 1,169.68

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Solution

The fourth proportional to 1,175.15, 1,616.75 and 1,169.68 is: 1,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.15 : 1,616.75 = 1,169.68 : x
  2. Step 2: Convert to fraction form
    1,175.15/1,616.75 = 1,169.68/x
  3. Step 3: Cross multiply
    1,175.15x = 1,616.75 × 1,169.68
  4. Step 4: Simplify right side
    1,175.15x = 1,891,080.14
  5. Step 5: Solve for x
    x = 1,891,080.14/1,175.15
  6. Step 6: Final answer
    x = 1,609.22

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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.