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Finding the Fourth Proportional to 2,409.88, 3,617 and 1,680

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Solution

The fourth proportional to 2,409.88, 3,617 and 1,680 is: 2,521.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,409.88 : 3,617 = 1,680 : x
  2. Step 2: Convert to fraction form
    2,409.88/3,617 = 1,680/x
  3. Step 3: Cross multiply
    2,409.88x = 3,617 × 1,680
  4. Step 4: Simplify right side
    2,409.88x = 6,076,560
  5. Step 5: Solve for x
    x = 6,076,560/2,409.88
  6. Step 6: Final answer
    x = 2,521.52

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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.