Home / 1,113.45-1,669.82-382.83

Finding the Fourth Proportional to 1,113.45, 1,669.82 and 382.83

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Solution

The fourth proportional to 1,113.45, 1,669.82 and 382.83 is: 574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.45 : 1,669.82 = 382.83 : x
  2. Step 2: Convert to fraction form
    1,113.45/1,669.82 = 382.83/x
  3. Step 3: Cross multiply
    1,113.45x = 1,669.82 × 382.83
  4. Step 4: Simplify right side
    1,113.45x = 639,249.01
  5. Step 5: Solve for x
    x = 639,249.01/1,113.45
  6. Step 6: Final answer
    x = 574.12

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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.