Home / 3,623.43-5,431.50-1,431.30

Finding the Fourth Proportional to 3,623.43, 5,431.50 and 1,431.30

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Solution

The fourth proportional to 3,623.43, 5,431.50 and 1,431.30 is: 2,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,623.43 : 5,431.50 = 1,431.30 : x
  2. Step 2: Convert to fraction form
    3,623.43/5,431.50 = 1,431.30/x
  3. Step 3: Cross multiply
    3,623.43x = 5,431.50 × 1,431.30
  4. Step 4: Simplify right side
    3,623.43x = 7,774,105.95
  5. Step 5: Solve for x
    x = 7,774,105.95/3,623.43
  6. Step 6: Final answer
    x = 2,145.51

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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.