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Finding the Fourth Proportional to 8,802.80, 13,209.40 and 3,260.08

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Solution

The fourth proportional to 8,802.80, 13,209.40 and 3,260.08 is: 4,892.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.80 : 13,209.40 = 3,260.08 : x
  2. Step 2: Convert to fraction form
    8,802.80/13,209.40 = 3,260.08/x
  3. Step 3: Cross multiply
    8,802.80x = 13,209.40 × 3,260.08
  4. Step 4: Simplify right side
    8,802.80x = 43,063,700.75
  5. Step 5: Solve for x
    x = 43,063,700.75/8,802.80
  6. Step 6: Final answer
    x = 4,892.05

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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.