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Finding the Fourth Proportional to 1,921.46, 2,881.58 and 622.62

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Solution

The fourth proportional to 1,921.46, 2,881.58 and 622.62 is: 933.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.46 : 2,881.58 = 622.62 : x
  2. Step 2: Convert to fraction form
    1,921.46/2,881.58 = 622.62/x
  3. Step 3: Cross multiply
    1,921.46x = 2,881.58 × 622.62
  4. Step 4: Simplify right side
    1,921.46x = 1,794,129.34
  5. Step 5: Solve for x
    x = 1,794,129.34/1,921.46
  6. Step 6: Final answer
    x = 933.73

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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.