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Finding the Fourth Proportional to 5,351.90, 8,015.70 and 2,751.80

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Solution

The fourth proportional to 5,351.90, 8,015.70 and 2,751.80 is: 4,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.90 : 8,015.70 = 2,751.80 : x
  2. Step 2: Convert to fraction form
    5,351.90/8,015.70 = 2,751.80/x
  3. Step 3: Cross multiply
    5,351.90x = 8,015.70 × 2,751.80
  4. Step 4: Simplify right side
    5,351.90x = 22,057,603.26
  5. Step 5: Solve for x
    x = 22,057,603.26/5,351.90
  6. Step 6: Final answer
    x = 4,121.45

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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.