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Finding the Fourth Proportional to 2,553.45, 3,829.16 and 992.58

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Solution

The fourth proportional to 2,553.45, 3,829.16 and 992.58 is: 1,488.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,553.45 : 3,829.16 = 992.58 : x
  2. Step 2: Convert to fraction form
    2,553.45/3,829.16 = 992.58/x
  3. Step 3: Cross multiply
    2,553.45x = 3,829.16 × 992.58
  4. Step 4: Simplify right side
    2,553.45x = 3,800,742.67
  5. Step 5: Solve for x
    x = 3,800,742.67/2,553.45
  6. Step 6: Final answer
    x = 1,488.47

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1.5x scale

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.