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Finding the Fourth Proportional to 8,526.60, 12,790.53 and 2,979.30

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Solution

The fourth proportional to 8,526.60, 12,790.53 and 2,979.30 is: 4,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,526.60 : 12,790.53 = 2,979.30 : x
  2. Step 2: Convert to fraction form
    8,526.60/12,790.53 = 2,979.30/x
  3. Step 3: Cross multiply
    8,526.60x = 12,790.53 × 2,979.30
  4. Step 4: Simplify right side
    8,526.60x = 38,106,826.03
  5. Step 5: Solve for x
    x = 38,106,826.03/8,526.60
  6. Step 6: Final answer
    x = 4,469.17

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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.