Home / 8,215.32-12,330.30-3,835.26

Finding the Fourth Proportional to 8,215.32, 12,330.30 and 3,835.26

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Solution

The fourth proportional to 8,215.32, 12,330.30 and 3,835.26 is: 5,756.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.32 : 12,330.30 = 3,835.26 : x
  2. Step 2: Convert to fraction form
    8,215.32/12,330.30 = 3,835.26/x
  3. Step 3: Cross multiply
    8,215.32x = 12,330.30 × 3,835.26
  4. Step 4: Simplify right side
    8,215.32x = 47,289,906.38
  5. Step 5: Solve for x
    x = 47,289,906.38/8,215.32
  6. Step 6: Final answer
    x = 5,756.31

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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.