Home / 3,957.80-5,461.83-2,189.43

Finding the Fourth Proportional to 3,957.80, 5,461.83 and 2,189.43

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Solution

The fourth proportional to 3,957.80, 5,461.83 and 2,189.43 is: 3,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.80 : 5,461.83 = 2,189.43 : x
  2. Step 2: Convert to fraction form
    3,957.80/5,461.83 = 2,189.43/x
  3. Step 3: Cross multiply
    3,957.80x = 5,461.83 × 2,189.43
  4. Step 4: Simplify right side
    3,957.80x = 11,958,294.46
  5. Step 5: Solve for x
    x = 11,958,294.46/3,957.80
  6. Step 6: Final answer
    x = 3,021.45

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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.