Home / 5,520.40-8,261.46-5,290.76

Finding the Fourth Proportional to 5,520.40, 8,261.46 and 5,290.76

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Solution

The fourth proportional to 5,520.40, 8,261.46 and 5,290.76 is: 7,917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.40 : 8,261.46 = 5,290.76 : x
  2. Step 2: Convert to fraction form
    5,520.40/8,261.46 = 5,290.76/x
  3. Step 3: Cross multiply
    5,520.40x = 8,261.46 × 5,290.76
  4. Step 4: Simplify right side
    5,520.40x = 43,709,453.13
  5. Step 5: Solve for x
    x = 43,709,453.13/5,520.40
  6. Step 6: Final answer
    x = 7,917.81

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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.