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Finding the Fourth Proportional to 2,179.35, 3,268.76 and 619.49

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Solution

The fourth proportional to 2,179.35, 3,268.76 and 619.49 is: 929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.35 : 3,268.76 = 619.49 : x
  2. Step 2: Convert to fraction form
    2,179.35/3,268.76 = 619.49/x
  3. Step 3: Cross multiply
    2,179.35x = 3,268.76 × 619.49
  4. Step 4: Simplify right side
    2,179.35x = 2,024,969.21
  5. Step 5: Solve for x
    x = 2,024,969.21/2,179.35
  6. Step 6: Final answer
    x = 929.16

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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.