Home / 1,730.28-2,387.78-984.25

Finding the Fourth Proportional to 1,730.28, 2,387.78 and 984.25

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Solution

The fourth proportional to 1,730.28, 2,387.78 and 984.25 is: 1,358.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.28 : 2,387.78 = 984.25 : x
  2. Step 2: Convert to fraction form
    1,730.28/2,387.78 = 984.25/x
  3. Step 3: Cross multiply
    1,730.28x = 2,387.78 × 984.25
  4. Step 4: Simplify right side
    1,730.28x = 2,350,160.79
  5. Step 5: Solve for x
    x = 2,350,160.79/1,730.28
  6. Step 6: Final answer
    x = 1,358.25

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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.