Home / 3,325.90-4,990.00-1,478.31

Finding the Fourth Proportional to 3,325.90, 4,990.00 and 1,478.31

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Solution

The fourth proportional to 3,325.90, 4,990.00 and 1,478.31 is: 2,217.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.90 : 4,990.00 = 1,478.31 : x
  2. Step 2: Convert to fraction form
    3,325.90/4,990.00 = 1,478.31/x
  3. Step 3: Cross multiply
    3,325.90x = 4,990.00 × 1,478.31
  4. Step 4: Simplify right side
    3,325.90x = 7,376,763.38
  5. Step 5: Solve for x
    x = 7,376,763.38/3,325.90
  6. Step 6: Final answer
    x = 2,217.97

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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.