Home / 8,127.06-12,189.34-2,579.68

Finding the Fourth Proportional to 8,127.06, 12,189.34 and 2,579.68

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Solution

The fourth proportional to 8,127.06, 12,189.34 and 2,579.68 is: 3,869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.06 : 12,189.34 = 2,579.68 : x
  2. Step 2: Convert to fraction form
    8,127.06/12,189.34 = 2,579.68/x
  3. Step 3: Cross multiply
    8,127.06x = 12,189.34 × 2,579.68
  4. Step 4: Simplify right side
    8,127.06x = 31,444,596.61
  5. Step 5: Solve for x
    x = 31,444,596.61/8,127.06
  6. Step 6: Final answer
    x = 3,869.12

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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.