Home / 2,990.42-4,488.82-2,645.97

Finding the Fourth Proportional to 2,990.42, 4,488.82 and 2,645.97

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Solution

The fourth proportional to 2,990.42, 4,488.82 and 2,645.97 is: 3,971.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.42 : 4,488.82 = 2,645.97 : x
  2. Step 2: Convert to fraction form
    2,990.42/4,488.82 = 2,645.97/x
  3. Step 3: Cross multiply
    2,990.42x = 4,488.82 × 2,645.97
  4. Step 4: Simplify right side
    2,990.42x = 11,877,259.61
  5. Step 5: Solve for x
    x = 11,877,259.61/2,990.42
  6. Step 6: Final answer
    x = 3,971.77

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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.