Home / 1,622.03-2,237.20-1,398.38

Finding the Fourth Proportional to 1,622.03, 2,237.20 and 1,398.38

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Solution

The fourth proportional to 1,622.03, 2,237.20 and 1,398.38 is: 1,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.03 : 2,237.20 = 1,398.38 : x
  2. Step 2: Convert to fraction form
    1,622.03/2,237.20 = 1,398.38/x
  3. Step 3: Cross multiply
    1,622.03x = 2,237.20 × 1,398.38
  4. Step 4: Simplify right side
    1,622.03x = 3,128,441.05
  5. Step 5: Solve for x
    x = 3,128,441.05/1,622.03
  6. Step 6: Final answer
    x = 1,928.73

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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.