Home / 7,989.22-11,983.02-2,145.07

Finding the Fourth Proportional to 7,989.22, 11,983.02 and 2,145.07

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Solution

The fourth proportional to 7,989.22, 11,983.02 and 2,145.07 is: 3,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.22 : 11,983.02 = 2,145.07 : x
  2. Step 2: Convert to fraction form
    7,989.22/11,983.02 = 2,145.07/x
  3. Step 3: Cross multiply
    7,989.22x = 11,983.02 × 2,145.07
  4. Step 4: Simplify right side
    7,989.22x = 25,704,416.71
  5. Step 5: Solve for x
    x = 25,704,416.71/7,989.22
  6. Step 6: Final answer
    x = 3,217.39

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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.