Home / 7,485.28-11,227.31-2,921.33

Finding the Fourth Proportional to 7,485.28, 11,227.31 and 2,921.33

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Solution

The fourth proportional to 7,485.28, 11,227.31 and 2,921.33 is: 4,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.28 : 11,227.31 = 2,921.33 : x
  2. Step 2: Convert to fraction form
    7,485.28/11,227.31 = 2,921.33/x
  3. Step 3: Cross multiply
    7,485.28x = 11,227.31 × 2,921.33
  4. Step 4: Simplify right side
    7,485.28x = 32,798,701.94
  5. Step 5: Solve for x
    x = 32,798,701.94/7,485.28
  6. Step 6: Final answer
    x = 4,381.76

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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.