Home / 7,390.20-11,090.70-5,760.75

Finding the Fourth Proportional to 7,390.20, 11,090.70 and 5,760.75

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Solution

The fourth proportional to 7,390.20, 11,090.70 and 5,760.75 is: 8,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.20 : 11,090.70 = 5,760.75 : x
  2. Step 2: Convert to fraction form
    7,390.20/11,090.70 = 5,760.75/x
  3. Step 3: Cross multiply
    7,390.20x = 11,090.70 × 5,760.75
  4. Step 4: Simplify right side
    7,390.20x = 63,890,750.03
  5. Step 5: Solve for x
    x = 63,890,750.03/7,390.20
  6. Step 6: Final answer
    x = 8,645.33

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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.