Home / 3,320.57-4,980.87-1,240.55

Finding the Fourth Proportional to 3,320.57, 4,980.87 and 1,240.55

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Solution

The fourth proportional to 3,320.57, 4,980.87 and 1,240.55 is: 1,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.57 : 4,980.87 = 1,240.55 : x
  2. Step 2: Convert to fraction form
    3,320.57/4,980.87 = 1,240.55/x
  3. Step 3: Cross multiply
    3,320.57x = 4,980.87 × 1,240.55
  4. Step 4: Simplify right side
    3,320.57x = 6,179,008.56
  5. Step 5: Solve for x
    x = 6,179,008.56/3,320.57
  6. Step 6: Final answer
    x = 1,860.83

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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.