Home / 5,380.76-8,069.88-1,485.48

Finding the Fourth Proportional to 5,380.76, 8,069.88 and 1,485.48

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Solution

The fourth proportional to 5,380.76, 8,069.88 and 1,485.48 is: 2,227.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.76 : 8,069.88 = 1,485.48 : x
  2. Step 2: Convert to fraction form
    5,380.76/8,069.88 = 1,485.48/x
  3. Step 3: Cross multiply
    5,380.76x = 8,069.88 × 1,485.48
  4. Step 4: Simplify right side
    5,380.76x = 11,987,645.34
  5. Step 5: Solve for x
    x = 11,987,645.34/5,380.76
  6. Step 6: Final answer
    x = 2,227.87

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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.