Home / 7,485.28-11,229.60-2,291.20

Finding the Fourth Proportional to 7,485.28, 11,229.60 and 2,291.20

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Solution

The fourth proportional to 7,485.28, 11,229.60 and 2,291.20 is: 3,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.28 : 11,229.60 = 2,291.20 : x
  2. Step 2: Convert to fraction form
    7,485.28/11,229.60 = 2,291.20/x
  3. Step 3: Cross multiply
    7,485.28x = 11,229.60 × 2,291.20
  4. Step 4: Simplify right side
    7,485.28x = 25,729,259.52
  5. Step 5: Solve for x
    x = 25,729,259.52/7,485.28
  6. Step 6: Final answer
    x = 3,437.31

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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.