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Finding the Fourth Proportional to 2,179.55, 3,270.24 and 948

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Solution

The fourth proportional to 2,179.55, 3,270.24 and 948 is: 1,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.55 : 3,270.24 = 948 : x
  2. Step 2: Convert to fraction form
    2,179.55/3,270.24 = 948/x
  3. Step 3: Cross multiply
    2,179.55x = 3,270.24 × 948
  4. Step 4: Simplify right side
    2,179.55x = 3,100,187.52
  5. Step 5: Solve for x
    x = 3,100,187.52/2,179.55
  6. Step 6: Final answer
    x = 1,422.40

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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.