Home / 3,311.40-4,569.82-1,819.30

Finding the Fourth Proportional to 3,311.40, 4,569.82 and 1,819.30

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Solution

The fourth proportional to 3,311.40, 4,569.82 and 1,819.30 is: 2,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.40 : 4,569.82 = 1,819.30 : x
  2. Step 2: Convert to fraction form
    3,311.40/4,569.82 = 1,819.30/x
  3. Step 3: Cross multiply
    3,311.40x = 4,569.82 × 1,819.30
  4. Step 4: Simplify right side
    3,311.40x = 8,313,873.53
  5. Step 5: Solve for x
    x = 8,313,873.53/3,311.40
  6. Step 6: Final answer
    x = 2,510.68

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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.