Home / 3,219.30-4,830.12-1,272.84

Finding the Fourth Proportional to 3,219.30, 4,830.12 and 1,272.84

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Solution

The fourth proportional to 3,219.30, 4,830.12 and 1,272.84 is: 1,909.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.30 : 4,830.12 = 1,272.84 : x
  2. Step 2: Convert to fraction form
    3,219.30/4,830.12 = 1,272.84/x
  3. Step 3: Cross multiply
    3,219.30x = 4,830.12 × 1,272.84
  4. Step 4: Simplify right side
    3,219.30x = 6,147,969.94
  5. Step 5: Solve for x
    x = 6,147,969.94/3,219.30
  6. Step 6: Final answer
    x = 1,909.72

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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.