Home / 1,217.36-1,825.08-1,085.84

Finding the Fourth Proportional to 1,217.36, 1,825.08 and 1,085.84

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Solution

The fourth proportional to 1,217.36, 1,825.08 and 1,085.84 is: 1,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.36 : 1,825.08 = 1,085.84 : x
  2. Step 2: Convert to fraction form
    1,217.36/1,825.08 = 1,085.84/x
  3. Step 3: Cross multiply
    1,217.36x = 1,825.08 × 1,085.84
  4. Step 4: Simplify right side
    1,217.36x = 1,981,744.87
  5. Step 5: Solve for x
    x = 1,981,744.87/1,217.36
  6. Step 6: Final answer
    x = 1,627.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.