Home / 7,992.28-11,992.48-5,389.75

Finding the Fourth Proportional to 7,992.28, 11,992.48 and 5,389.75

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Solution

The fourth proportional to 7,992.28, 11,992.48 and 5,389.75 is: 8,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.28 : 11,992.48 = 5,389.75 : x
  2. Step 2: Convert to fraction form
    7,992.28/11,992.48 = 5,389.75/x
  3. Step 3: Cross multiply
    7,992.28x = 11,992.48 × 5,389.75
  4. Step 4: Simplify right side
    7,992.28x = 64,636,442.13
  5. Step 5: Solve for x
    x = 64,636,442.13/7,992.28
  6. Step 6: Final answer
    x = 8,087.36

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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.