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Finding the Fourth Proportional to 2,622.32, 3,933.48 and 890.48

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Solution

The fourth proportional to 2,622.32, 3,933.48 and 890.48 is: 1,335.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.32 : 3,933.48 = 890.48 : x
  2. Step 2: Convert to fraction form
    2,622.32/3,933.48 = 890.48/x
  3. Step 3: Cross multiply
    2,622.32x = 3,933.48 × 890.48
  4. Step 4: Simplify right side
    2,622.32x = 3,502,685.27
  5. Step 5: Solve for x
    x = 3,502,685.27/2,622.32
  6. Step 6: Final answer
    x = 1,335.72

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Double scale
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Similar ratio
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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.