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Finding the Fourth Proportional to 8,454.60, 12,681.81 and 2,611.26

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Solution

The fourth proportional to 8,454.60, 12,681.81 and 2,611.26 is: 3,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.60 : 12,681.81 = 2,611.26 : x
  2. Step 2: Convert to fraction form
    8,454.60/12,681.81 = 2,611.26/x
  3. Step 3: Cross multiply
    8,454.60x = 12,681.81 × 2,611.26
  4. Step 4: Simplify right side
    8,454.60x = 33,115,503.18
  5. Step 5: Solve for x
    x = 33,115,503.18/8,454.60
  6. Step 6: Final answer
    x = 3,916.86

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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.