Home / 7,489.20-11,233.80-5,739.60

Finding the Fourth Proportional to 7,489.20, 11,233.80 and 5,739.60

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Solution

The fourth proportional to 7,489.20, 11,233.80 and 5,739.60 is: 8,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.20 : 11,233.80 = 5,739.60 : x
  2. Step 2: Convert to fraction form
    7,489.20/11,233.80 = 5,739.60/x
  3. Step 3: Cross multiply
    7,489.20x = 11,233.80 × 5,739.60
  4. Step 4: Simplify right side
    7,489.20x = 64,477,518.48
  5. Step 5: Solve for x
    x = 64,477,518.48/7,489.20
  6. Step 6: Final answer
    x = 8,609.40

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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.