Home / 3,893.80-5,373.30-2,215.18

Finding the Fourth Proportional to 3,893.80, 5,373.30 and 2,215.18

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Solution

The fourth proportional to 3,893.80, 5,373.30 and 2,215.18 is: 3,056.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.80 : 5,373.30 = 2,215.18 : x
  2. Step 2: Convert to fraction form
    3,893.80/5,373.30 = 2,215.18/x
  3. Step 3: Cross multiply
    3,893.80x = 5,373.30 × 2,215.18
  4. Step 4: Simplify right side
    3,893.80x = 11,902,826.69
  5. Step 5: Solve for x
    x = 11,902,826.69/3,893.80
  6. Step 6: Final answer
    x = 3,056.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.