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Finding the Fourth Proportional to 2,179.55, 3,269.25 and 619.55

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Solution

The fourth proportional to 2,179.55, 3,269.25 and 619.55 is: 929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.55 : 3,269.25 = 619.55 : x
  2. Step 2: Convert to fraction form
    2,179.55/3,269.25 = 619.55/x
  3. Step 3: Cross multiply
    2,179.55x = 3,269.25 × 619.55
  4. Step 4: Simplify right side
    2,179.55x = 2,025,463.84
  5. Step 5: Solve for x
    x = 2,025,463.84/2,179.55
  6. Step 6: Final answer
    x = 929.30

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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.