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Finding the Fourth Proportional to 2,622.88, 3,932.08 and 890.56

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Solution

The fourth proportional to 2,622.88, 3,932.08 and 890.56 is: 1,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.88 : 3,932.08 = 890.56 : x
  2. Step 2: Convert to fraction form
    2,622.88/3,932.08 = 890.56/x
  3. Step 3: Cross multiply
    2,622.88x = 3,932.08 × 890.56
  4. Step 4: Simplify right side
    2,622.88x = 3,501,753.16
  5. Step 5: Solve for x
    x = 3,501,753.16/2,622.88
  6. Step 6: Final answer
    x = 1,335.08

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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.