Home / 1,538.67-2,124.03-949.39

Finding the Fourth Proportional to 1,538.67, 2,124.03 and 949.39

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Solution

The fourth proportional to 1,538.67, 2,124.03 and 949.39 is: 1,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.67 : 2,124.03 = 949.39 : x
  2. Step 2: Convert to fraction form
    1,538.67/2,124.03 = 949.39/x
  3. Step 3: Cross multiply
    1,538.67x = 2,124.03 × 949.39
  4. Step 4: Simplify right side
    1,538.67x = 2,016,532.84
  5. Step 5: Solve for x
    x = 2,016,532.84/1,538.67
  6. Step 6: Final answer
    x = 1,310.57

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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.