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Finding the Fourth Proportional to 3,486.64, 5,225.64 and 1,755.76

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Solution

The fourth proportional to 3,486.64, 5,225.64 and 1,755.76 is: 2,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.64 : 5,225.64 = 1,755.76 : x
  2. Step 2: Convert to fraction form
    3,486.64/5,225.64 = 1,755.76/x
  3. Step 3: Cross multiply
    3,486.64x = 5,225.64 × 1,755.76
  4. Step 4: Simplify right side
    3,486.64x = 9,174,969.69
  5. Step 5: Solve for x
    x = 9,174,969.69/3,486.64
  6. Step 6: Final answer
    x = 2,631.46

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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.