Home / 1,622.20-2,438.70-1,384.60

Finding the Fourth Proportional to 1,622.20, 2,438.70 and 1,384.60

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Solution

The fourth proportional to 1,622.20, 2,438.70 and 1,384.60 is: 2,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.20 : 2,438.70 = 1,384.60 : x
  2. Step 2: Convert to fraction form
    1,622.20/2,438.70 = 1,384.60/x
  3. Step 3: Cross multiply
    1,622.20x = 2,438.70 × 1,384.60
  4. Step 4: Simplify right side
    1,622.20x = 3,376,624.02
  5. Step 5: Solve for x
    x = 3,376,624.02/1,622.20
  6. Step 6: Final answer
    x = 2,081.51

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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.