Home / 2,124.16-3,185.94-663.28

Finding the Fourth Proportional to 2,124.16, 3,185.94 and 663.28

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Solution

The fourth proportional to 2,124.16, 3,185.94 and 663.28 is: 994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.16 : 3,185.94 = 663.28 : x
  2. Step 2: Convert to fraction form
    2,124.16/3,185.94 = 663.28/x
  3. Step 3: Cross multiply
    2,124.16x = 3,185.94 × 663.28
  4. Step 4: Simplify right side
    2,124.16x = 2,113,170.28
  5. Step 5: Solve for x
    x = 2,113,170.28/2,124.16
  6. Step 6: Final answer
    x = 994.83

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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.