Home / 3,321.10-4,984.72-1,678.80

Finding the Fourth Proportional to 3,321.10, 4,984.72 and 1,678.80

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Solution

The fourth proportional to 3,321.10, 4,984.72 and 1,678.80 is: 2,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.10 : 4,984.72 = 1,678.80 : x
  2. Step 2: Convert to fraction form
    3,321.10/4,984.72 = 1,678.80/x
  3. Step 3: Cross multiply
    3,321.10x = 4,984.72 × 1,678.80
  4. Step 4: Simplify right side
    3,321.10x = 8,368,343.74
  5. Step 5: Solve for x
    x = 8,368,343.74/3,321.10
  6. Step 6: Final answer
    x = 2,519.75

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1.5x scale

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.