Home / 3,957.12-5,461.11-2,188.89

Finding the Fourth Proportional to 3,957.12, 5,461.11 and 2,188.89

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Solution

The fourth proportional to 3,957.12, 5,461.11 and 2,188.89 is: 3,020.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.12 : 5,461.11 = 2,188.89 : x
  2. Step 2: Convert to fraction form
    3,957.12/5,461.11 = 2,188.89/x
  3. Step 3: Cross multiply
    3,957.12x = 5,461.11 × 2,188.89
  4. Step 4: Simplify right side
    3,957.12x = 11,953,769.07
  5. Step 5: Solve for x
    x = 11,953,769.07/3,957.12
  6. Step 6: Final answer
    x = 3,020.83

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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.