Home / 1,113.08-1,669.92-382.66

Finding the Fourth Proportional to 1,113.08, 1,669.92 and 382.66

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Solution

The fourth proportional to 1,113.08, 1,669.92 and 382.66 is: 574.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.08 : 1,669.92 = 382.66 : x
  2. Step 2: Convert to fraction form
    1,113.08/1,669.92 = 382.66/x
  3. Step 3: Cross multiply
    1,113.08x = 1,669.92 × 382.66
  4. Step 4: Simplify right side
    1,113.08x = 639,011.59
  5. Step 5: Solve for x
    x = 639,011.59/1,113.08
  6. Step 6: Final answer
    x = 574.09

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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.