Home / 8,129.18-12,195.47-4,620.80

Finding the Fourth Proportional to 8,129.18, 12,195.47 and 4,620.80

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Solution

The fourth proportional to 8,129.18, 12,195.47 and 4,620.80 is: 6,932.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.18 : 12,195.47 = 4,620.80 : x
  2. Step 2: Convert to fraction form
    8,129.18/12,195.47 = 4,620.80/x
  3. Step 3: Cross multiply
    8,129.18x = 12,195.47 × 4,620.80
  4. Step 4: Simplify right side
    8,129.18x = 56,352,869.82
  5. Step 5: Solve for x
    x = 56,352,869.82/8,129.18
  6. Step 6: Final answer
    x = 6,932.17

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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.