Home / 8,579.20-12,849.36-6,718.72

Finding the Fourth Proportional to 8,579.20, 12,849.36 and 6,718.72

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Solution

The fourth proportional to 8,579.20, 12,849.36 and 6,718.72 is: 10,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.20 : 12,849.36 = 6,718.72 : x
  2. Step 2: Convert to fraction form
    8,579.20/12,849.36 = 6,718.72/x
  3. Step 3: Cross multiply
    8,579.20x = 12,849.36 × 6,718.72
  4. Step 4: Simplify right side
    8,579.20x = 86,331,252.02
  5. Step 5: Solve for x
    x = 86,331,252.02/8,579.20
  6. Step 6: Final answer
    x = 10,062.86

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1.5x scale

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.