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Finding the Fourth Proportional to 3,551.55, 5,328 and 1,603.75

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Solution

The fourth proportional to 3,551.55, 5,328 and 1,603.75 is: 2,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.55 : 5,328 = 1,603.75 : x
  2. Step 2: Convert to fraction form
    3,551.55/5,328 = 1,603.75/x
  3. Step 3: Cross multiply
    3,551.55x = 5,328 × 1,603.75
  4. Step 4: Simplify right side
    3,551.55x = 8,544,780
  5. Step 5: Solve for x
    x = 8,544,780/3,551.55
  6. Step 6: Final answer
    x = 2,405.93

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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.