Home / 1,195.07-1,645.45-1,085.72

Finding the Fourth Proportional to 1,195.07, 1,645.45 and 1,085.72

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Solution

The fourth proportional to 1,195.07, 1,645.45 and 1,085.72 is: 1,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.07 : 1,645.45 = 1,085.72 : x
  2. Step 2: Convert to fraction form
    1,195.07/1,645.45 = 1,085.72/x
  3. Step 3: Cross multiply
    1,195.07x = 1,645.45 × 1,085.72
  4. Step 4: Simplify right side
    1,195.07x = 1,786,487.03
  5. Step 5: Solve for x
    x = 1,786,487.03/1,195.07
  6. Step 6: Final answer
    x = 1,494.89

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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.