Home / 3,587.36-5,380.70-1,121.98

Finding the Fourth Proportional to 3,587.36, 5,380.70 and 1,121.98

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Solution

The fourth proportional to 3,587.36, 5,380.70 and 1,121.98 is: 1,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.36 : 5,380.70 = 1,121.98 : x
  2. Step 2: Convert to fraction form
    3,587.36/5,380.70 = 1,121.98/x
  3. Step 3: Cross multiply
    3,587.36x = 5,380.70 × 1,121.98
  4. Step 4: Simplify right side
    3,587.36x = 6,037,023.15
  5. Step 5: Solve for x
    x = 6,037,023.15/3,587.36
  6. Step 6: Final answer
    x = 1,682.86

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1.5x scale

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.