Home / 7,981.25-11,972.69-3,055.02

Finding the Fourth Proportional to 7,981.25, 11,972.69 and 3,055.02

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Solution

The fourth proportional to 7,981.25, 11,972.69 and 3,055.02 is: 4,582.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.25 : 11,972.69 = 3,055.02 : x
  2. Step 2: Convert to fraction form
    7,981.25/11,972.69 = 3,055.02/x
  3. Step 3: Cross multiply
    7,981.25x = 11,972.69 × 3,055.02
  4. Step 4: Simplify right side
    7,981.25x = 36,576,792.13
  5. Step 5: Solve for x
    x = 36,576,792.13/7,981.25
  6. Step 6: Final answer
    x = 4,582.84

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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.