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Finding the Fourth Proportional to 8,579.08, 12,870.60 and 3,648.88

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Solution

The fourth proportional to 8,579.08, 12,870.60 and 3,648.88 is: 5,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.08 : 12,870.60 = 3,648.88 : x
  2. Step 2: Convert to fraction form
    8,579.08/12,870.60 = 3,648.88/x
  3. Step 3: Cross multiply
    8,579.08x = 12,870.60 × 3,648.88
  4. Step 4: Simplify right side
    8,579.08x = 46,963,274.93
  5. Step 5: Solve for x
    x = 46,963,274.93/8,579.08
  6. Step 6: Final answer
    x = 5,474.16

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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.