Home / 8,386.32-12,581.64-3,189.36

Finding the Fourth Proportional to 8,386.32, 12,581.64 and 3,189.36

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Solution

The fourth proportional to 8,386.32, 12,581.64 and 3,189.36 is: 4,784.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.32 : 12,581.64 = 3,189.36 : x
  2. Step 2: Convert to fraction form
    8,386.32/12,581.64 = 3,189.36/x
  3. Step 3: Cross multiply
    8,386.32x = 12,581.64 × 3,189.36
  4. Step 4: Simplify right side
    8,386.32x = 40,127,379.35
  5. Step 5: Solve for x
    x = 40,127,379.35/8,386.32
  6. Step 6: Final answer
    x = 4,784.86

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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.