Home / 8,386.10-12,579.14-2,145.88

Finding the Fourth Proportional to 8,386.10, 12,579.14 and 2,145.88

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Solution

The fourth proportional to 8,386.10, 12,579.14 and 2,145.88 is: 3,218.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.10 : 12,579.14 = 2,145.88 : x
  2. Step 2: Convert to fraction form
    8,386.10/12,579.14 = 2,145.88/x
  3. Step 3: Cross multiply
    8,386.10x = 12,579.14 × 2,145.88
  4. Step 4: Simplify right side
    8,386.10x = 26,993,324.94
  5. Step 5: Solve for x
    x = 26,993,324.94/8,386.10
  6. Step 6: Final answer
    x = 3,218.82

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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.