Home / 3,406.13-4,700.49-1,990.79

Finding the Fourth Proportional to 3,406.13, 4,700.49 and 1,990.79

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Solution

The fourth proportional to 3,406.13, 4,700.49 and 1,990.79 is: 2,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.13 : 4,700.49 = 1,990.79 : x
  2. Step 2: Convert to fraction form
    3,406.13/4,700.49 = 1,990.79/x
  3. Step 3: Cross multiply
    3,406.13x = 4,700.49 × 1,990.79
  4. Step 4: Simplify right side
    3,406.13x = 9,357,664.98
  5. Step 5: Solve for x
    x = 9,357,664.98/3,406.13
  6. Step 6: Final answer
    x = 2,747.31

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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.