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Finding the Fourth Proportional to 2,411.30, 3,619 and 1,719.66

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Solution

The fourth proportional to 2,411.30, 3,619 and 1,719.66 is: 2,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,411.30 : 3,619 = 1,719.66 : x
  2. Step 2: Convert to fraction form
    2,411.30/3,619 = 1,719.66/x
  3. Step 3: Cross multiply
    2,411.30x = 3,619 × 1,719.66
  4. Step 4: Simplify right side
    2,411.30x = 6,223,449.54
  5. Step 5: Solve for x
    x = 6,223,449.54/2,411.30
  6. Step 6: Final answer
    x = 2,580.95

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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.