Home / 7,239.20-10,858.80-5,489.60

Finding the Fourth Proportional to 7,239.20, 10,858.80 and 5,489.60

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Solution

The fourth proportional to 7,239.20, 10,858.80 and 5,489.60 is: 8,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.20 : 10,858.80 = 5,489.60 : x
  2. Step 2: Convert to fraction form
    7,239.20/10,858.80 = 5,489.60/x
  3. Step 3: Cross multiply
    7,239.20x = 10,858.80 × 5,489.60
  4. Step 4: Simplify right side
    7,239.20x = 59,610,468.48
  5. Step 5: Solve for x
    x = 59,610,468.48/7,239.20
  6. Step 6: Final answer
    x = 8,234.40

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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.