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Finding the Fourth Proportional to 10,625.78, 15,938.69 and 3,230.30

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Solution

The fourth proportional to 10,625.78, 15,938.69 and 3,230.30 is: 4,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,625.78 : 15,938.69 = 3,230.30 : x
  2. Step 2: Convert to fraction form
    10,625.78/15,938.69 = 3,230.30/x
  3. Step 3: Cross multiply
    10,625.78x = 15,938.69 × 3,230.30
  4. Step 4: Simplify right side
    10,625.78x = 51,486,654.46
  5. Step 5: Solve for x
    x = 51,486,654.46/10,625.78
  6. Step 6: Final answer
    x = 4,845.45

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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.