Home / 3,587.12-5,380.84-1,121.98

Finding the Fourth Proportional to 3,587.12, 5,380.84 and 1,121.98

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Solution

The fourth proportional to 3,587.12, 5,380.84 and 1,121.98 is: 1,683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.12 : 5,380.84 = 1,121.98 : x
  2. Step 2: Convert to fraction form
    3,587.12/5,380.84 = 1,121.98/x
  3. Step 3: Cross multiply
    3,587.12x = 5,380.84 × 1,121.98
  4. Step 4: Simplify right side
    3,587.12x = 6,037,194.86
  5. Step 5: Solve for x
    x = 6,037,194.86/3,587.12
  6. Step 6: Final answer
    x = 1,683.02

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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.