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Finding the Fourth Proportional to 8,706.60, 13,056.12 and 3,158.10

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Solution

The fourth proportional to 8,706.60, 13,056.12 and 3,158.10 is: 4,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.60 : 13,056.12 = 3,158.10 : x
  2. Step 2: Convert to fraction form
    8,706.60/13,056.12 = 3,158.10/x
  3. Step 3: Cross multiply
    8,706.60x = 13,056.12 × 3,158.10
  4. Step 4: Simplify right side
    8,706.60x = 41,232,532.57
  5. Step 5: Solve for x
    x = 41,232,532.57/8,706.60
  6. Step 6: Final answer
    x = 4,735.78

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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.