Home / 7,981.47-11,972.21-3,600.18

Finding the Fourth Proportional to 7,981.47, 11,972.21 and 3,600.18

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Solution

The fourth proportional to 7,981.47, 11,972.21 and 3,600.18 is: 5,400.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.47 : 11,972.21 = 3,600.18 : x
  2. Step 2: Convert to fraction form
    7,981.47/11,972.21 = 3,600.18/x
  3. Step 3: Cross multiply
    7,981.47x = 11,972.21 × 3,600.18
  4. Step 4: Simplify right side
    7,981.47x = 43,102,093.00
  5. Step 5: Solve for x
    x = 43,102,093.00/7,981.47
  6. Step 6: Final answer
    x = 5,400.27

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1.5x scale

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.