Home / 1,538.40-2,308.32-1,512.48

Finding the Fourth Proportional to 1,538.40, 2,308.32 and 1,512.48

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Solution

The fourth proportional to 1,538.40, 2,308.32 and 1,512.48 is: 2,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.40 : 2,308.32 = 1,512.48 : x
  2. Step 2: Convert to fraction form
    1,538.40/2,308.32 = 1,512.48/x
  3. Step 3: Cross multiply
    1,538.40x = 2,308.32 × 1,512.48
  4. Step 4: Simplify right side
    1,538.40x = 3,491,287.83
  5. Step 5: Solve for x
    x = 3,491,287.83/1,538.40
  6. Step 6: Final answer
    x = 2,269.43

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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.