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Finding the Fourth Proportional to 1,724.79, 2,584.88 and 845.95

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Solution

The fourth proportional to 1,724.79, 2,584.88 and 845.95 is: 1,267.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.79 : 2,584.88 = 845.95 : x
  2. Step 2: Convert to fraction form
    1,724.79/2,584.88 = 845.95/x
  3. Step 3: Cross multiply
    1,724.79x = 2,584.88 × 845.95
  4. Step 4: Simplify right side
    1,724.79x = 2,186,662.08
  5. Step 5: Solve for x
    x = 2,186,662.08/1,724.79
  6. Step 6: Final answer
    x = 1,267.78

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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.