Home / 8,120.10-11,199.99-5,282.25

Finding the Fourth Proportional to 8,120.10, 11,199.99 and 5,282.25

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Solution

The fourth proportional to 8,120.10, 11,199.99 and 5,282.25 is: 7,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.10 : 11,199.99 = 5,282.25 : x
  2. Step 2: Convert to fraction form
    8,120.10/11,199.99 = 5,282.25/x
  3. Step 3: Cross multiply
    8,120.10x = 11,199.99 × 5,282.25
  4. Step 4: Simplify right side
    8,120.10x = 59,161,147.18
  5. Step 5: Solve for x
    x = 59,161,147.18/8,120.10
  6. Step 6: Final answer
    x = 7,285.77

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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.