Home / 3,990.69-5,977.80-2,342.28

Finding the Fourth Proportional to 3,990.69, 5,977.80 and 2,342.28

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Solution

The fourth proportional to 3,990.69, 5,977.80 and 2,342.28 is: 3,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.69 : 5,977.80 = 2,342.28 : x
  2. Step 2: Convert to fraction form
    3,990.69/5,977.80 = 2,342.28/x
  3. Step 3: Cross multiply
    3,990.69x = 5,977.80 × 2,342.28
  4. Step 4: Simplify right side
    3,990.69x = 14,001,681.38
  5. Step 5: Solve for x
    x = 14,001,681.38/3,990.69
  6. Step 6: Final answer
    x = 3,508.59

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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.