Home / 2,387.82-3,582-1,089.66

Finding the Fourth Proportional to 2,387.82, 3,582 and 1,089.66

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Solution

The fourth proportional to 2,387.82, 3,582 and 1,089.66 is: 1,634.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.82 : 3,582 = 1,089.66 : x
  2. Step 2: Convert to fraction form
    2,387.82/3,582 = 1,089.66/x
  3. Step 3: Cross multiply
    2,387.82x = 3,582 × 1,089.66
  4. Step 4: Simplify right side
    2,387.82x = 3,903,162.12
  5. Step 5: Solve for x
    x = 3,903,162.12/2,387.82
  6. Step 6: Final answer
    x = 1,634.61

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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.