Home / 3,330.90-4,992.36-1,478.04

Finding the Fourth Proportional to 3,330.90, 4,992.36 and 1,478.04

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Solution

The fourth proportional to 3,330.90, 4,992.36 and 1,478.04 is: 2,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.90 : 4,992.36 = 1,478.04 : x
  2. Step 2: Convert to fraction form
    3,330.90/4,992.36 = 1,478.04/x
  3. Step 3: Cross multiply
    3,330.90x = 4,992.36 × 1,478.04
  4. Step 4: Simplify right side
    3,330.90x = 7,378,907.77
  5. Step 5: Solve for x
    x = 7,378,907.77/3,330.90
  6. Step 6: Final answer
    x = 2,215.29

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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.