Home / 8,717.14-12,029.73-5,179.67

Finding the Fourth Proportional to 8,717.14, 12,029.73 and 5,179.67

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Solution

The fourth proportional to 8,717.14, 12,029.73 and 5,179.67 is: 7,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.14 : 12,029.73 = 5,179.67 : x
  2. Step 2: Convert to fraction form
    8,717.14/12,029.73 = 5,179.67/x
  3. Step 3: Cross multiply
    8,717.14x = 12,029.73 × 5,179.67
  4. Step 4: Simplify right side
    8,717.14x = 62,309,971.44
  5. Step 5: Solve for x
    x = 62,309,971.44/8,717.14
  6. Step 6: Final answer
    x = 7,147.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.