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Finding the Fourth Proportional to 9,153.54, 13,730.28 and 3,603.87

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Solution

The fourth proportional to 9,153.54, 13,730.28 and 3,603.87 is: 5,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,153.54 : 13,730.28 = 3,603.87 : x
  2. Step 2: Convert to fraction form
    9,153.54/13,730.28 = 3,603.87/x
  3. Step 3: Cross multiply
    9,153.54x = 13,730.28 × 3,603.87
  4. Step 4: Simplify right side
    9,153.54x = 49,482,144.18
  5. Step 5: Solve for x
    x = 49,482,144.18/9,153.54
  6. Step 6: Final answer
    x = 5,405.79

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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.