Home / 5,279.08-7,911.73-2,155.42

Finding the Fourth Proportional to 5,279.08, 7,911.73 and 2,155.42

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Solution

The fourth proportional to 5,279.08, 7,911.73 and 2,155.42 is: 3,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.08 : 7,911.73 = 2,155.42 : x
  2. Step 2: Convert to fraction form
    5,279.08/7,911.73 = 2,155.42/x
  3. Step 3: Cross multiply
    5,279.08x = 7,911.73 × 2,155.42
  4. Step 4: Simplify right side
    5,279.08x = 17,053,101.08
  5. Step 5: Solve for x
    x = 17,053,101.08/5,279.08
  6. Step 6: Final answer
    x = 3,230.32

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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.