Home / 1,434.25-2,152.19-664.75

Finding the Fourth Proportional to 1,434.25, 2,152.19 and 664.75

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Solution

The fourth proportional to 1,434.25, 2,152.19 and 664.75 is: 997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.25 : 2,152.19 = 664.75 : x
  2. Step 2: Convert to fraction form
    1,434.25/2,152.19 = 664.75/x
  3. Step 3: Cross multiply
    1,434.25x = 2,152.19 × 664.75
  4. Step 4: Simplify right side
    1,434.25x = 1,430,668.30
  5. Step 5: Solve for x
    x = 1,430,668.30/1,434.25
  6. Step 6: Final answer
    x = 997.50

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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.