Home / 2,853.28-4,280.60-905.48

Finding the Fourth Proportional to 2,853.28, 4,280.60 and 905.48

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Solution

The fourth proportional to 2,853.28, 4,280.60 and 905.48 is: 1,358.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.28 : 4,280.60 = 905.48 : x
  2. Step 2: Convert to fraction form
    2,853.28/4,280.60 = 905.48/x
  3. Step 3: Cross multiply
    2,853.28x = 4,280.60 × 905.48
  4. Step 4: Simplify right side
    2,853.28x = 3,875,997.69
  5. Step 5: Solve for x
    x = 3,875,997.69/2,853.28
  6. Step 6: Final answer
    x = 1,358.44

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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.