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Finding the Fourth Proportional to 3,603.60, 5,405.39 and 1,006.53

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Solution

The fourth proportional to 3,603.60, 5,405.39 and 1,006.53 is: 1,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.60 : 5,405.39 = 1,006.53 : x
  2. Step 2: Convert to fraction form
    3,603.60/5,405.39 = 1,006.53/x
  3. Step 3: Cross multiply
    3,603.60x = 5,405.39 × 1,006.53
  4. Step 4: Simplify right side
    3,603.60x = 5,440,687.20
  5. Step 5: Solve for x
    x = 5,440,687.20/3,603.60
  6. Step 6: Final answer
    x = 1,509.79

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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.