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Finding the Fourth Proportional to 9,289, 13,933.50 and 3,133

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Solution

The fourth proportional to 9,289, 13,933.50 and 3,133 is: 4,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289 : 13,933.50 = 3,133 : x
  2. Step 2: Convert to fraction form
    9,289/13,933.50 = 3,133/x
  3. Step 3: Cross multiply
    9,289x = 13,933.50 × 3,133
  4. Step 4: Simplify right side
    9,289x = 43,653,655.50
  5. Step 5: Solve for x
    x = 43,653,655.50/9,289
  6. Step 6: Final answer
    x = 4,699.50

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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.