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Finding the Fourth Proportional to 10,200.60, 15,300.54 and 3,180.60

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Solution

The fourth proportional to 10,200.60, 15,300.54 and 3,180.60 is: 4,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,200.60 : 15,300.54 = 3,180.60 : x
  2. Step 2: Convert to fraction form
    10,200.60/15,300.54 = 3,180.60/x
  3. Step 3: Cross multiply
    10,200.60x = 15,300.54 × 3,180.60
  4. Step 4: Simplify right side
    10,200.60x = 48,664,897.52
  5. Step 5: Solve for x
    x = 48,664,897.52/10,200.60
  6. Step 6: Final answer
    x = 4,770.79

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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.