Home / 8,579.13-12,872.52-5,458.30

Finding the Fourth Proportional to 8,579.13, 12,872.52 and 5,458.30

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Solution

The fourth proportional to 8,579.13, 12,872.52 and 5,458.30 is: 8,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.13 : 12,872.52 = 5,458.30 : x
  2. Step 2: Convert to fraction form
    8,579.13/12,872.52 = 5,458.30/x
  3. Step 3: Cross multiply
    8,579.13x = 12,872.52 × 5,458.30
  4. Step 4: Simplify right side
    8,579.13x = 70,262,075.92
  5. Step 5: Solve for x
    x = 70,262,075.92/8,579.13
  6. Step 6: Final answer
    x = 8,189.88

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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.