Home / 4,940.10-7,410.15-1,821.60

Finding the Fourth Proportional to 4,940.10, 7,410.15 and 1,821.60

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Solution

The fourth proportional to 4,940.10, 7,410.15 and 1,821.60 is: 2,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.10 : 7,410.15 = 1,821.60 : x
  2. Step 2: Convert to fraction form
    4,940.10/7,410.15 = 1,821.60/x
  3. Step 3: Cross multiply
    4,940.10x = 7,410.15 × 1,821.60
  4. Step 4: Simplify right side
    4,940.10x = 13,498,329.24
  5. Step 5: Solve for x
    x = 13,498,329.24/4,940.10
  6. Step 6: Final answer
    x = 2,732.40

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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.