Home / 3,217.12-4,439.64-1,820.14

Finding the Fourth Proportional to 3,217.12, 4,439.64 and 1,820.14

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Solution

The fourth proportional to 3,217.12, 4,439.64 and 1,820.14 is: 2,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.12 : 4,439.64 = 1,820.14 : x
  2. Step 2: Convert to fraction form
    3,217.12/4,439.64 = 1,820.14/x
  3. Step 3: Cross multiply
    3,217.12x = 4,439.64 × 1,820.14
  4. Step 4: Simplify right side
    3,217.12x = 8,080,766.35
  5. Step 5: Solve for x
    x = 8,080,766.35/3,217.12
  6. Step 6: Final answer
    x = 2,511.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.