Home / 7,485.20-11,222.40-4,889.60

Finding the Fourth Proportional to 7,485.20, 11,222.40 and 4,889.60

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Solution

The fourth proportional to 7,485.20, 11,222.40 and 4,889.60 is: 7,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.20 : 11,222.40 = 4,889.60 : x
  2. Step 2: Convert to fraction form
    7,485.20/11,222.40 = 4,889.60/x
  3. Step 3: Cross multiply
    7,485.20x = 11,222.40 × 4,889.60
  4. Step 4: Simplify right side
    7,485.20x = 54,873,047.04
  5. Step 5: Solve for x
    x = 54,873,047.04/7,485.20
  6. Step 6: Final answer
    x = 7,330.87

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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.