Home / 8,789.81-13,189.91-3,247.07

Finding the Fourth Proportional to 8,789.81, 13,189.91 and 3,247.07

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Solution

The fourth proportional to 8,789.81, 13,189.91 and 3,247.07 is: 4,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.81 : 13,189.91 = 3,247.07 : x
  2. Step 2: Convert to fraction form
    8,789.81/13,189.91 = 3,247.07/x
  3. Step 3: Cross multiply
    8,789.81x = 13,189.91 × 3,247.07
  4. Step 4: Simplify right side
    8,789.81x = 42,828,478.88
  5. Step 5: Solve for x
    x = 42,828,478.88/8,789.81
  6. Step 6: Final answer
    x = 4,872.52

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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.