Home / 8,091.90-11,153.70-6,320.43

Finding the Fourth Proportional to 8,091.90, 11,153.70 and 6,320.43

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Solution

The fourth proportional to 8,091.90, 11,153.70 and 6,320.43 is: 8,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.90 : 11,153.70 = 6,320.43 : x
  2. Step 2: Convert to fraction form
    8,091.90/11,153.70 = 6,320.43/x
  3. Step 3: Cross multiply
    8,091.90x = 11,153.70 × 6,320.43
  4. Step 4: Simplify right side
    8,091.90x = 70,496,180.09
  5. Step 5: Solve for x
    x = 70,496,180.09/8,091.90
  6. Step 6: Final answer
    x = 8,711.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.