Home / 7,972.39-11,949.81-3,289.84

Finding the Fourth Proportional to 7,972.39, 11,949.81 and 3,289.84

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Solution

The fourth proportional to 7,972.39, 11,949.81 and 3,289.84 is: 4,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.39 : 11,949.81 = 3,289.84 : x
  2. Step 2: Convert to fraction form
    7,972.39/11,949.81 = 3,289.84/x
  3. Step 3: Cross multiply
    7,972.39x = 11,949.81 × 3,289.84
  4. Step 4: Simplify right side
    7,972.39x = 39,312,962.93
  5. Step 5: Solve for x
    x = 39,312,962.93/7,972.39
  6. Step 6: Final answer
    x = 4,931.14

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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.