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Finding the Fourth Proportional to 8,579.60, 12,859.80 and 4,883.60

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Solution

The fourth proportional to 8,579.60, 12,859.80 and 4,883.60 is: 7,319.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.60 : 12,859.80 = 4,883.60 : x
  2. Step 2: Convert to fraction form
    8,579.60/12,859.80 = 4,883.60/x
  3. Step 3: Cross multiply
    8,579.60x = 12,859.80 × 4,883.60
  4. Step 4: Simplify right side
    8,579.60x = 62,802,119.28
  5. Step 5: Solve for x
    x = 62,802,119.28/8,579.60
  6. Step 6: Final answer
    x = 7,319.94

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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.