Home / 8,108.30-11,181.85-5,272.70

Finding the Fourth Proportional to 8,108.30, 11,181.85 and 5,272.70

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Solution

The fourth proportional to 8,108.30, 11,181.85 and 5,272.70 is: 7,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.30 : 11,181.85 = 5,272.70 : x
  2. Step 2: Convert to fraction form
    8,108.30/11,181.85 = 5,272.70/x
  3. Step 3: Cross multiply
    8,108.30x = 11,181.85 × 5,272.70
  4. Step 4: Simplify right side
    8,108.30x = 58,958,471.40
  5. Step 5: Solve for x
    x = 58,958,471.40/8,108.30
  6. Step 6: Final answer
    x = 7,271.37

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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.