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Finding the Fourth Proportional to 8,767.68, 12,098.81 and 4,788.78

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Solution

The fourth proportional to 8,767.68, 12,098.81 and 4,788.78 is: 6,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.68 : 12,098.81 = 4,788.78 : x
  2. Step 2: Convert to fraction form
    8,767.68/12,098.81 = 4,788.78/x
  3. Step 3: Cross multiply
    8,767.68x = 12,098.81 × 4,788.78
  4. Step 4: Simplify right side
    8,767.68x = 57,938,515.41
  5. Step 5: Solve for x
    x = 57,938,515.41/8,767.68
  6. Step 6: Final answer
    x = 6,608.19

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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.