Home / 8,127.34-12,191.43-2,581.11

Finding the Fourth Proportional to 8,127.34, 12,191.43 and 2,581.11

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Solution

The fourth proportional to 8,127.34, 12,191.43 and 2,581.11 is: 3,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.34 : 12,191.43 = 2,581.11 : x
  2. Step 2: Convert to fraction form
    8,127.34/12,191.43 = 2,581.11/x
  3. Step 3: Cross multiply
    8,127.34x = 12,191.43 × 2,581.11
  4. Step 4: Simplify right side
    8,127.34x = 31,467,421.89
  5. Step 5: Solve for x
    x = 31,467,421.89/8,127.34
  6. Step 6: Final answer
    x = 3,871.80

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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.