Home / 1,291.93-1,928.52-1,195.56

Finding the Fourth Proportional to 1,291.93, 1,928.52 and 1,195.56

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Solution

The fourth proportional to 1,291.93, 1,928.52 and 1,195.56 is: 1,784.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.93 : 1,928.52 = 1,195.56 : x
  2. Step 2: Convert to fraction form
    1,291.93/1,928.52 = 1,195.56/x
  3. Step 3: Cross multiply
    1,291.93x = 1,928.52 × 1,195.56
  4. Step 4: Simplify right side
    1,291.93x = 2,305,661.37
  5. Step 5: Solve for x
    x = 2,305,661.37/1,291.93
  6. Step 6: Final answer
    x = 1,784.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.