Home / 8,129.13-12,171.69-4,225.34

Finding the Fourth Proportional to 8,129.13, 12,171.69 and 4,225.34

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Solution

The fourth proportional to 8,129.13, 12,171.69 and 4,225.34 is: 6,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.13 : 12,171.69 = 4,225.34 : x
  2. Step 2: Convert to fraction form
    8,129.13/12,171.69 = 4,225.34/x
  3. Step 3: Cross multiply
    8,129.13x = 12,171.69 × 4,225.34
  4. Step 4: Simplify right side
    8,129.13x = 51,429,467.77
  5. Step 5: Solve for x
    x = 51,429,467.77/8,129.13
  6. Step 6: Final answer
    x = 6,326.56

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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.