Home / 8,660.52-12,989.34-3,112.74

Finding the Fourth Proportional to 8,660.52, 12,989.34 and 3,112.74

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Solution

The fourth proportional to 8,660.52, 12,989.34 and 3,112.74 is: 4,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.52 : 12,989.34 = 3,112.74 : x
  2. Step 2: Convert to fraction form
    8,660.52/12,989.34 = 3,112.74/x
  3. Step 3: Cross multiply
    8,660.52x = 12,989.34 × 3,112.74
  4. Step 4: Simplify right side
    8,660.52x = 40,432,438.19
  5. Step 5: Solve for x
    x = 40,432,438.19/8,660.52
  6. Step 6: Final answer
    x = 4,668.59

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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.