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Finding the Fourth Proportional to 8,154.60, 12,227.40 and 2,606.40

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Solution

The fourth proportional to 8,154.60, 12,227.40 and 2,606.40 is: 3,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.60 : 12,227.40 = 2,606.40 : x
  2. Step 2: Convert to fraction form
    8,154.60/12,227.40 = 2,606.40/x
  3. Step 3: Cross multiply
    8,154.60x = 12,227.40 × 2,606.40
  4. Step 4: Simplify right side
    8,154.60x = 31,869,495.36
  5. Step 5: Solve for x
    x = 31,869,495.36/8,154.60
  6. Step 6: Final answer
    x = 3,908.16

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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.