Home / 8,190.88-12,278.94-5,559.28

Finding the Fourth Proportional to 8,190.88, 12,278.94 and 5,559.28

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Solution

The fourth proportional to 8,190.88, 12,278.94 and 5,559.28 is: 8,333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.88 : 12,278.94 = 5,559.28 : x
  2. Step 2: Convert to fraction form
    8,190.88/12,278.94 = 5,559.28/x
  3. Step 3: Cross multiply
    8,190.88x = 12,278.94 × 5,559.28
  4. Step 4: Simplify right side
    8,190.88x = 68,262,065.56
  5. Step 5: Solve for x
    x = 68,262,065.56/8,190.88
  6. Step 6: Final answer
    x = 8,333.91

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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.