Home / 8,421.66-11,622.15-4,644.54

Finding the Fourth Proportional to 8,421.66, 11,622.15 and 4,644.54

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Solution

The fourth proportional to 8,421.66, 11,622.15 and 4,644.54 is: 6,409.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.66 : 11,622.15 = 4,644.54 : x
  2. Step 2: Convert to fraction form
    8,421.66/11,622.15 = 4,644.54/x
  3. Step 3: Cross multiply
    8,421.66x = 11,622.15 × 4,644.54
  4. Step 4: Simplify right side
    8,421.66x = 53,979,540.56
  5. Step 5: Solve for x
    x = 53,979,540.56/8,421.66
  6. Step 6: Final answer
    x = 6,409.61

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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.