Home / 7,834.64-11,751.92-1,911.45

Finding the Fourth Proportional to 7,834.64, 11,751.92 and 1,911.45

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Solution

The fourth proportional to 7,834.64, 11,751.92 and 1,911.45 is: 2,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,834.64 : 11,751.92 = 1,911.45 : x
  2. Step 2: Convert to fraction form
    7,834.64/11,751.92 = 1,911.45/x
  3. Step 3: Cross multiply
    7,834.64x = 11,751.92 × 1,911.45
  4. Step 4: Simplify right side
    7,834.64x = 22,463,197.93
  5. Step 5: Solve for x
    x = 22,463,197.93/7,834.64
  6. Step 6: Final answer
    x = 2,867.17

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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.