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Finding the Fourth Proportional to 8,802.12, 13,203.18 and 2,138.58

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Solution

The fourth proportional to 8,802.12, 13,203.18 and 2,138.58 is: 3,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.12 : 13,203.18 = 2,138.58 : x
  2. Step 2: Convert to fraction form
    8,802.12/13,203.18 = 2,138.58/x
  3. Step 3: Cross multiply
    8,802.12x = 13,203.18 × 2,138.58
  4. Step 4: Simplify right side
    8,802.12x = 28,236,056.68
  5. Step 5: Solve for x
    x = 28,236,056.68/8,802.12
  6. Step 6: Final answer
    x = 3,207.87

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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.