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Finding the Fourth Proportional to 5,751.80, 7,919.28 and 5,226.26

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Solution

The fourth proportional to 5,751.80, 7,919.28 and 5,226.26 is: 7,195.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.80 : 7,919.28 = 5,226.26 : x
  2. Step 2: Convert to fraction form
    5,751.80/7,919.28 = 5,226.26/x
  3. Step 3: Cross multiply
    5,751.80x = 7,919.28 × 5,226.26
  4. Step 4: Simplify right side
    5,751.80x = 41,388,216.29
  5. Step 5: Solve for x
    x = 41,388,216.29/5,751.80
  6. Step 6: Final answer
    x = 7,195.70

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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.