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Finding the Fourth Proportional to 1,730.43, 2,591.73 and 988.34

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Solution

The fourth proportional to 1,730.43, 2,591.73 and 988.34 is: 1,480.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.43 : 2,591.73 = 988.34 : x
  2. Step 2: Convert to fraction form
    1,730.43/2,591.73 = 988.34/x
  3. Step 3: Cross multiply
    1,730.43x = 2,591.73 × 988.34
  4. Step 4: Simplify right side
    1,730.43x = 2,561,497.47
  5. Step 5: Solve for x
    x = 2,561,497.47/1,730.43
  6. Step 6: Final answer
    x = 1,480.27

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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.