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Finding the Fourth Proportional to 2,179.79, 3,008.22 and 1,340.54

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Solution

The fourth proportional to 2,179.79, 3,008.22 and 1,340.54 is: 1,850.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.79 : 3,008.22 = 1,340.54 : x
  2. Step 2: Convert to fraction form
    2,179.79/3,008.22 = 1,340.54/x
  3. Step 3: Cross multiply
    2,179.79x = 3,008.22 × 1,340.54
  4. Step 4: Simplify right side
    2,179.79x = 4,032,639.24
  5. Step 5: Solve for x
    x = 4,032,639.24/2,179.79
  6. Step 6: Final answer
    x = 1,850.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.