Home / 8,125.34-12,188.43-2,579.11

Finding the Fourth Proportional to 8,125.34, 12,188.43 and 2,579.11

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Solution

The fourth proportional to 8,125.34, 12,188.43 and 2,579.11 is: 3,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.34 : 12,188.43 = 2,579.11 : x
  2. Step 2: Convert to fraction form
    8,125.34/12,188.43 = 2,579.11/x
  3. Step 3: Cross multiply
    8,125.34x = 12,188.43 × 2,579.11
  4. Step 4: Simplify right side
    8,125.34x = 31,435,271.23
  5. Step 5: Solve for x
    x = 31,435,271.23/8,125.34
  6. Step 6: Final answer
    x = 3,868.80

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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.