Home / 8,089.88-11,165.46-7,720.52

Finding the Fourth Proportional to 8,089.88, 11,165.46 and 7,720.52

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Solution

The fourth proportional to 8,089.88, 11,165.46 and 7,720.52 is: 10,655.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,089.88 : 11,165.46 = 7,720.52 : x
  2. Step 2: Convert to fraction form
    8,089.88/11,165.46 = 7,720.52/x
  3. Step 3: Cross multiply
    8,089.88x = 11,165.46 × 7,720.52
  4. Step 4: Simplify right side
    8,089.88x = 86,203,157.24
  5. Step 5: Solve for x
    x = 86,203,157.24/8,089.88
  6. Step 6: Final answer
    x = 10,655.68

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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.