Home / 7,834.20-11,751.14-1,911.12

Finding the Fourth Proportional to 7,834.20, 11,751.14 and 1,911.12

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Solution

The fourth proportional to 7,834.20, 11,751.14 and 1,911.12 is: 2,866.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,834.20 : 11,751.14 = 1,911.12 : x
  2. Step 2: Convert to fraction form
    7,834.20/11,751.14 = 1,911.12/x
  3. Step 3: Cross multiply
    7,834.20x = 11,751.14 × 1,911.12
  4. Step 4: Simplify right side
    7,834.20x = 22,457,838.68
  5. Step 5: Solve for x
    x = 22,457,838.68/7,834.20
  6. Step 6: Final answer
    x = 2,866.64

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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.