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Finding the Fourth Proportional to 8,564.79, 11,819.43 and 4,788.09

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Solution

The fourth proportional to 8,564.79, 11,819.43 and 4,788.09 is: 6,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,564.79 : 11,819.43 = 4,788.09 : x
  2. Step 2: Convert to fraction form
    8,564.79/11,819.43 = 4,788.09/x
  3. Step 3: Cross multiply
    8,564.79x = 11,819.43 × 4,788.09
  4. Step 4: Simplify right side
    8,564.79x = 56,592,494.59
  5. Step 5: Solve for x
    x = 56,592,494.59/8,564.79
  6. Step 6: Final answer
    x = 6,607.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.