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Finding the Fourth Proportional to 8,351.55, 12,530.16 and 2,805.48

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Solution

The fourth proportional to 8,351.55, 12,530.16 and 2,805.48 is: 4,209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,351.55 : 12,530.16 = 2,805.48 : x
  2. Step 2: Convert to fraction form
    8,351.55/12,530.16 = 2,805.48/x
  3. Step 3: Cross multiply
    8,351.55x = 12,530.16 × 2,805.48
  4. Step 4: Simplify right side
    8,351.55x = 35,153,113.28
  5. Step 5: Solve for x
    x = 35,153,113.28/8,351.55
  6. Step 6: Final answer
    x = 4,209.17

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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.