Home / 7,720.62-10,650.55-5,067.06

Finding the Fourth Proportional to 7,720.62, 10,650.55 and 5,067.06

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Solution

The fourth proportional to 7,720.62, 10,650.55 and 5,067.06 is: 6,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.62 : 10,650.55 = 5,067.06 : x
  2. Step 2: Convert to fraction form
    7,720.62/10,650.55 = 5,067.06/x
  3. Step 3: Cross multiply
    7,720.62x = 10,650.55 × 5,067.06
  4. Step 4: Simplify right side
    7,720.62x = 53,966,975.88
  5. Step 5: Solve for x
    x = 53,966,975.88/7,720.62
  6. Step 6: Final answer
    x = 6,989.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.