Home / 1,730.88-2,388.78-985.02

Finding the Fourth Proportional to 1,730.88, 2,388.78 and 985.02

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Solution

The fourth proportional to 1,730.88, 2,388.78 and 985.02 is: 1,359.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.88 : 2,388.78 = 985.02 : x
  2. Step 2: Convert to fraction form
    1,730.88/2,388.78 = 985.02/x
  3. Step 3: Cross multiply
    1,730.88x = 2,388.78 × 985.02
  4. Step 4: Simplify right side
    1,730.88x = 2,352,996.08
  5. Step 5: Solve for x
    x = 2,352,996.08/1,730.88
  6. Step 6: Final answer
    x = 1,359.42

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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.