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Finding the Fourth Proportional to 3,537.12, 5,305.68 and 940.32

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Solution

The fourth proportional to 3,537.12, 5,305.68 and 940.32 is: 1,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,537.12 : 5,305.68 = 940.32 : x
  2. Step 2: Convert to fraction form
    3,537.12/5,305.68 = 940.32/x
  3. Step 3: Cross multiply
    3,537.12x = 5,305.68 × 940.32
  4. Step 4: Simplify right side
    3,537.12x = 4,989,037.02
  5. Step 5: Solve for x
    x = 4,989,037.02/3,537.12
  6. Step 6: Final answer
    x = 1,410.48

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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.