Home / 1,485.09-2,225.66-755.19

Finding the Fourth Proportional to 1,485.09, 2,225.66 and 755.19

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Solution

The fourth proportional to 1,485.09, 2,225.66 and 755.19 is: 1,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.09 : 2,225.66 = 755.19 : x
  2. Step 2: Convert to fraction form
    1,485.09/2,225.66 = 755.19/x
  3. Step 3: Cross multiply
    1,485.09x = 2,225.66 × 755.19
  4. Step 4: Simplify right side
    1,485.09x = 1,680,792.40
  5. Step 5: Solve for x
    x = 1,680,792.40/1,485.09
  6. Step 6: Final answer
    x = 1,131.78

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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.