Home / 7,977.28-11,967.62-2,431.07

Finding the Fourth Proportional to 7,977.28, 11,967.62 and 2,431.07

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Solution

The fourth proportional to 7,977.28, 11,967.62 and 2,431.07 is: 3,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.28 : 11,967.62 = 2,431.07 : x
  2. Step 2: Convert to fraction form
    7,977.28/11,967.62 = 2,431.07/x
  3. Step 3: Cross multiply
    7,977.28x = 11,967.62 × 2,431.07
  4. Step 4: Simplify right side
    7,977.28x = 29,094,121.95
  5. Step 5: Solve for x
    x = 29,094,121.95/7,977.28
  6. Step 6: Final answer
    x = 3,647.12

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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.