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Finding the Fourth Proportional to 10,201.80, 15,301.80 and 2,805.60

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Solution

The fourth proportional to 10,201.80, 15,301.80 and 2,805.60 is: 4,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,201.80 : 15,301.80 = 2,805.60 : x
  2. Step 2: Convert to fraction form
    10,201.80/15,301.80 = 2,805.60/x
  3. Step 3: Cross multiply
    10,201.80x = 15,301.80 × 2,805.60
  4. Step 4: Simplify right side
    10,201.80x = 42,930,730.08
  5. Step 5: Solve for x
    x = 42,930,730.08/10,201.80
  6. Step 6: Final answer
    x = 4,208.15

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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.