Home / 7,834.58-11,751.90-1,991.16

Finding the Fourth Proportional to 7,834.58, 11,751.90 and 1,991.16

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Solution

The fourth proportional to 7,834.58, 11,751.90 and 1,991.16 is: 2,986.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,834.58 : 11,751.90 = 1,991.16 : x
  2. Step 2: Convert to fraction form
    7,834.58/11,751.90 = 1,991.16/x
  3. Step 3: Cross multiply
    7,834.58x = 11,751.90 × 1,991.16
  4. Step 4: Simplify right side
    7,834.58x = 23,399,913.20
  5. Step 5: Solve for x
    x = 23,399,913.20/7,834.58
  6. Step 6: Final answer
    x = 2,986.75

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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.