Home / 8,399.73-12,591.36-3,130.86

Finding the Fourth Proportional to 8,399.73, 12,591.36 and 3,130.86

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Solution

The fourth proportional to 8,399.73, 12,591.36 and 3,130.86 is: 4,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.73 : 12,591.36 = 3,130.86 : x
  2. Step 2: Convert to fraction form
    8,399.73/12,591.36 = 3,130.86/x
  3. Step 3: Cross multiply
    8,399.73x = 12,591.36 × 3,130.86
  4. Step 4: Simplify right side
    8,399.73x = 39,421,785.37
  5. Step 5: Solve for x
    x = 39,421,785.37/8,399.73
  6. Step 6: Final answer
    x = 4,693.22

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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.