Home / 8,288.31-12,415.84-4,115.70

Finding the Fourth Proportional to 8,288.31, 12,415.84 and 4,115.70

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Solution

The fourth proportional to 8,288.31, 12,415.84 and 4,115.70 is: 6,165.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.31 : 12,415.84 = 4,115.70 : x
  2. Step 2: Convert to fraction form
    8,288.31/12,415.84 = 4,115.70/x
  3. Step 3: Cross multiply
    8,288.31x = 12,415.84 × 4,115.70
  4. Step 4: Simplify right side
    8,288.31x = 51,099,872.69
  5. Step 5: Solve for x
    x = 51,099,872.69/8,288.31
  6. Step 6: Final answer
    x = 6,165.29

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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.