Home / 4,930.80-7,389.78-2,005.68

Finding the Fourth Proportional to 4,930.80, 7,389.78 and 2,005.68

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Solution

The fourth proportional to 4,930.80, 7,389.78 and 2,005.68 is: 3,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,930.80 : 7,389.78 = 2,005.68 : x
  2. Step 2: Convert to fraction form
    4,930.80/7,389.78 = 2,005.68/x
  3. Step 3: Cross multiply
    4,930.80x = 7,389.78 × 2,005.68
  4. Step 4: Simplify right side
    4,930.80x = 14,821,533.95
  5. Step 5: Solve for x
    x = 14,821,533.95/4,930.80
  6. Step 6: Final answer
    x = 3,005.91

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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.