Home / 8,087.80-12,134.40-7,216.78

Finding the Fourth Proportional to 8,087.80, 12,134.40 and 7,216.78

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Solution

The fourth proportional to 8,087.80, 12,134.40 and 7,216.78 is: 10,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.80 : 12,134.40 = 7,216.78 : x
  2. Step 2: Convert to fraction form
    8,087.80/12,134.40 = 7,216.78/x
  3. Step 3: Cross multiply
    8,087.80x = 12,134.40 × 7,216.78
  4. Step 4: Simplify right side
    8,087.80x = 87,571,295.23
  5. Step 5: Solve for x
    x = 87,571,295.23/8,087.80
  6. Step 6: Final answer
    x = 10,827.58

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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.