Home / 7,887.85-11,821.73-4,191.85

Finding the Fourth Proportional to 7,887.85, 11,821.73 and 4,191.85

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Solution

The fourth proportional to 7,887.85, 11,821.73 and 4,191.85 is: 6,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.85 : 11,821.73 = 4,191.85 : x
  2. Step 2: Convert to fraction form
    7,887.85/11,821.73 = 4,191.85/x
  3. Step 3: Cross multiply
    7,887.85x = 11,821.73 × 4,191.85
  4. Step 4: Simplify right side
    7,887.85x = 49,554,897.94
  5. Step 5: Solve for x
    x = 49,554,897.94/7,887.85
  6. Step 6: Final answer
    x = 6,282.43

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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.