Home / 1,884.52-2,828.40-911.31

Finding the Fourth Proportional to 1,884.52, 2,828.40 and 911.31

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Solution

The fourth proportional to 1,884.52, 2,828.40 and 911.31 is: 1,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,884.52 : 2,828.40 = 911.31 : x
  2. Step 2: Convert to fraction form
    1,884.52/2,828.40 = 911.31/x
  3. Step 3: Cross multiply
    1,884.52x = 2,828.40 × 911.31
  4. Step 4: Simplify right side
    1,884.52x = 2,577,549.20
  5. Step 5: Solve for x
    x = 2,577,549.20/1,884.52
  6. Step 6: Final answer
    x = 1,367.75

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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.