Home / 7,485.12-11,224-2,553.12

Finding the Fourth Proportional to 7,485.12, 11,224 and 2,553.12

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Solution

The fourth proportional to 7,485.12, 11,224 and 2,553.12 is: 3,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.12 : 11,224 = 2,553.12 : x
  2. Step 2: Convert to fraction form
    7,485.12/11,224 = 2,553.12/x
  3. Step 3: Cross multiply
    7,485.12x = 11,224 × 2,553.12
  4. Step 4: Simplify right side
    7,485.12x = 28,656,218.88
  5. Step 5: Solve for x
    x = 28,656,218.88/7,485.12
  6. Step 6: Final answer
    x = 3,828.42

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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.