Home / 1,615.73-2,229.95-986.62

Finding the Fourth Proportional to 1,615.73, 2,229.95 and 986.62

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Solution

The fourth proportional to 1,615.73, 2,229.95 and 986.62 is: 1,361.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.73 : 2,229.95 = 986.62 : x
  2. Step 2: Convert to fraction form
    1,615.73/2,229.95 = 986.62/x
  3. Step 3: Cross multiply
    1,615.73x = 2,229.95 × 986.62
  4. Step 4: Simplify right side
    1,615.73x = 2,200,108.34
  5. Step 5: Solve for x
    x = 2,200,108.34/1,615.73
  6. Step 6: Final answer
    x = 1,361.68

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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.