Home / 8,178.98-11,286.68-4,642.11

Finding the Fourth Proportional to 8,178.98, 11,286.68 and 4,642.11

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Solution

The fourth proportional to 8,178.98, 11,286.68 and 4,642.11 is: 6,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.98 : 11,286.68 = 4,642.11 : x
  2. Step 2: Convert to fraction form
    8,178.98/11,286.68 = 4,642.11/x
  3. Step 3: Cross multiply
    8,178.98x = 11,286.68 × 4,642.11
  4. Step 4: Simplify right side
    8,178.98x = 52,393,986.88
  5. Step 5: Solve for x
    x = 52,393,986.88/8,178.98
  6. Step 6: Final answer
    x = 6,405.94

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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.