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Finding the Fourth Proportional to 2,837.21, 4,256.02 and 757.20

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Solution

The fourth proportional to 2,837.21, 4,256.02 and 757.20 is: 1,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,837.21 : 4,256.02 = 757.20 : x
  2. Step 2: Convert to fraction form
    2,837.21/4,256.02 = 757.20/x
  3. Step 3: Cross multiply
    2,837.21x = 4,256.02 × 757.20
  4. Step 4: Simplify right side
    2,837.21x = 3,222,658.34
  5. Step 5: Solve for x
    x = 3,222,658.34/2,837.21
  6. Step 6: Final answer
    x = 1,135.85

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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.