Home / 3,587.39-5,381.76-1,121.61

Finding the Fourth Proportional to 3,587.39, 5,381.76 and 1,121.61

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Solution

The fourth proportional to 3,587.39, 5,381.76 and 1,121.61 is: 1,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.39 : 5,381.76 = 1,121.61 : x
  2. Step 2: Convert to fraction form
    3,587.39/5,381.76 = 1,121.61/x
  3. Step 3: Cross multiply
    3,587.39x = 5,381.76 × 1,121.61
  4. Step 4: Simplify right side
    3,587.39x = 6,036,235.83
  5. Step 5: Solve for x
    x = 6,036,235.83/3,587.39
  6. Step 6: Final answer
    x = 1,682.63

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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.