Home / 3,321.05-4,984.65-1,678.75

Finding the Fourth Proportional to 3,321.05, 4,984.65 and 1,678.75

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Solution

The fourth proportional to 3,321.05, 4,984.65 and 1,678.75 is: 2,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.05 : 4,984.65 = 1,678.75 : x
  2. Step 2: Convert to fraction form
    3,321.05/4,984.65 = 1,678.75/x
  3. Step 3: Cross multiply
    3,321.05x = 4,984.65 × 1,678.75
  4. Step 4: Simplify right side
    3,321.05x = 8,367,985.11
  5. Step 5: Solve for x
    x = 8,367,985.11/3,321.05
  6. Step 6: Final answer
    x = 2,519.68

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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.