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Finding the Fourth Proportional to 8,802.20, 13,212.90 and 4,914.20

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Solution

The fourth proportional to 8,802.20, 13,212.90 and 4,914.20 is: 7,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.20 : 13,212.90 = 4,914.20 : x
  2. Step 2: Convert to fraction form
    8,802.20/13,212.90 = 4,914.20/x
  3. Step 3: Cross multiply
    8,802.20x = 13,212.90 × 4,914.20
  4. Step 4: Simplify right side
    8,802.20x = 64,930,833.18
  5. Step 5: Solve for x
    x = 64,930,833.18/8,802.20
  6. Step 6: Final answer
    x = 7,376.66

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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.