Home / 3,209.20-4,813.58-900.70

Finding the Fourth Proportional to 3,209.20, 4,813.58 and 900.70

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Solution

The fourth proportional to 3,209.20, 4,813.58 and 900.70 is: 1,350.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.20 : 4,813.58 = 900.70 : x
  2. Step 2: Convert to fraction form
    3,209.20/4,813.58 = 900.70/x
  3. Step 3: Cross multiply
    3,209.20x = 4,813.58 × 900.70
  4. Step 4: Simplify right side
    3,209.20x = 4,335,591.51
  5. Step 5: Solve for x
    x = 4,335,591.51/3,209.20
  6. Step 6: Final answer
    x = 1,350.99

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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.